Calculus For The Life Sciences
2nd Edition
ISBN: 9780321964038
Author: GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher: Pearson Addison Wesley,
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 2.2, Problem 64E
Solve each question in Exercises
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Let f be a function whose graph consists of 5 line segments and a semicircle as shown in the figure below.
Let g(x) = √ƒƒ(t) dt .
0
3
2
-2
2
4
5
6
7
8
9
10
11
12
13
14
15
1. g(0) =
2. g(2) =
3. g(4) =
4. g(6) =
5. g'(3) =
6. g'(13)=
The expression 3 | (3+1/+1)
of the following integrals?
A
Ов
E
+
+
+ +
18
3+1+1
3++1
3++1
(A) √2×14 dx
x+1
(C) 1½-½√ √ ² ( 14 ) d x
(B) √31dx
(D) So 3+x
-dx
is a Riemann sum approximation of which
5
(E) 1½√√3dx
2x+1
2. Suppose the population of Wakanda t years after 2000 is given by the equation
f(t) = 45000(1.006). If this trend continues, in what year will the population reach 50,000
people? Show all your work, round your answer to two decimal places, and include units. (4
points)
Chapter 2 Solutions
Calculus For The Life Sciences
Ch. 2.1 - YOUR TURN Solve 25x2=125x+3Ch. 2.1 - Prob. 2YTCh. 2.1 - YOUR TURN Find the amount after 4 years if 800 is...Ch. 2.1 - A ream of 20-lb paper contains 500 sheets and is...Ch. 2.1 - A ream of 20-lb paper contains 500 sheets and is...Ch. 2.1 - For Exercises 3-11, match the correct graph A-F to...Ch. 2.1 - For Exercises 3-11, match the correct graph A-F to...Ch. 2.1 - For Exercises 3-11, match the correct graph A-F to...Ch. 2.1 - For Exercises 3-11, match the correct graph A-F to...Ch. 2.1 - For Exercises 3-11, match the correct graph A-F to...
Ch. 2.1 - For Exercises 3-11, match the correct graph A-F to...Ch. 2.1 - For Exercises 3-11, match the correct graph A-F to...Ch. 2.1 - For Exercises 3-11, match the correct graph A-F to...Ch. 2.1 - For Exercises 3-11, match the correct graph A-F to...Ch. 2.1 - In Exercises3-11, there were more formulas for...Ch. 2.1 - Prob. 13ECh. 2.1 - Prob. 14ECh. 2.1 - Prob. 15ECh. 2.1 - Solve each equation. ex=1e5Ch. 2.1 - Prob. 17ECh. 2.1 - Prob. 18ECh. 2.1 - Solve each equation. 16x+3=642x-5Ch. 2.1 - Prob. 20ECh. 2.1 - Prob. 21ECh. 2.1 - Prob. 22ECh. 2.1 - Prob. 23ECh. 2.1 - Prob. 24ECh. 2.1 - Prob. 25ECh. 2.1 - Prob. 26ECh. 2.1 - Prob. 27ECh. 2.1 - Prob. 28ECh. 2.1 - Prob. 29ECh. 2.1 - Prob. 30ECh. 2.1 - Prob. 31ECh. 2.1 - Prob. 32ECh. 2.1 - Prob. 33ECh. 2.1 - Prob. 34ECh. 2.1 - Prob. 35ECh. 2.1 - A friend claims that as x becomes large, the...Ch. 2.1 - Prob. 37ECh. 2.1 - Growth of Bacteria Salmonella bacteria, found on...Ch. 2.1 - Prob. 39ECh. 2.1 - Physician Demand The demand for physicians is...Ch. 2.1 - Prob. 41ECh. 2.1 - Bacteria in Sausage The number of Enterococcus...Ch. 2.1 - Prob. 43ECh. 2.1 - Prob. 44ECh. 2.1 - Cortisone Concentration A mathematical model for...Ch. 2.1 - Prob. 46ECh. 2.1 - Prob. 47ECh. 2.1 - Prob. 48ECh. 2.1 - Prob. 50ECh. 2.1 - Interest Find the interest earned on 10,000...Ch. 2.1 - Prob. 52ECh. 2.1 - Interest Ron Hampton needs to choose between two...Ch. 2.1 - Prob. 54ECh. 2.1 - Prob. 55ECh. 2.1 - Prob. 56ECh. 2.1 - Interest Leigh Jacks plans to invest 500 into a...Ch. 2.1 - Prob. 58ECh. 2.1 - Prob. 59ECh. 2.1 - Interest On January 1, 2000, Jack deposited 1000...Ch. 2.2 - YOUR TURN Write the equation in logarithmic...Ch. 2.2 - Prob. 2YTCh. 2.2 - YOUR TURN Write the expression logax2/y3 as a sum,...Ch. 2.2 - Prob. 4YTCh. 2.2 - YOUR TURN Solve for x: log2x+log2x+2=3Ch. 2.2 - YOUR TURN 6 Solve for x: 2x+1=3xCh. 2.2 - Prob. 7YTCh. 2.2 - Write each exponential equation in logarithmic...Ch. 2.2 - Prob. 2ECh. 2.2 - Write each exponential equation in logarithmic...Ch. 2.2 - Prob. 4ECh. 2.2 - Prob. 5ECh. 2.2 - Prob. 6ECh. 2.2 - Prob. 7ECh. 2.2 - Prob. 8ECh. 2.2 - Prob. 9ECh. 2.2 - Prob. 10ECh. 2.2 - Prob. 11ECh. 2.2 - Prob. 12ECh. 2.2 - Prob. 13ECh. 2.2 - Evaluate each logarithm without using a...Ch. 2.2 - Prob. 15ECh. 2.2 - Prob. 16ECh. 2.2 - Prob. 17ECh. 2.2 - Prob. 18ECh. 2.2 - Prob. 19ECh. 2.2 - Prob. 20ECh. 2.2 - Prob. 21ECh. 2.2 - Prob. 22ECh. 2.2 - Prob. 23ECh. 2.2 - Prob. 24ECh. 2.2 - Prob. 25ECh. 2.2 - Prob. 26ECh. 2.2 - Prob. 27ECh. 2.2 - Prob. 28ECh. 2.2 - Prob. 29ECh. 2.2 - Prob. 30ECh. 2.2 - Prob. 31ECh. 2.2 - Prob. 32ECh. 2.2 - Prob. 33ECh. 2.2 - Suppose logb2=a and logb3=c. Use the properties of...Ch. 2.2 - Prob. 35ECh. 2.2 - Prob. 36ECh. 2.2 - Prob. 37ECh. 2.2 - Prob. 38ECh. 2.2 - Prob. 39ECh. 2.2 - Prob. 40ECh. 2.2 - Prob. 41ECh. 2.2 - Prob. 42ECh. 2.2 - Prob. 43ECh. 2.2 - Prob. 44ECh. 2.2 - Prob. 45ECh. 2.2 - Prob. 46ECh. 2.2 - Prob. 47ECh. 2.2 - Prob. 48ECh. 2.2 - Prob. 49ECh. 2.2 - Prob. 50ECh. 2.2 - Prob. 51ECh. 2.2 - Prob. 52ECh. 2.2 - Prob. 53ECh. 2.2 - Prob. 54ECh. 2.2 - Prob. 55ECh. 2.2 - Prob. 56ECh. 2.2 - Prob. 57ECh. 2.2 - Prob. 58ECh. 2.2 - Prob. 59ECh. 2.2 - Prob. 60ECh. 2.2 - Prob. 61ECh. 2.2 - Prob. 62ECh. 2.2 - Solve each question in Exercises 41-64. Round...Ch. 2.2 - Solve each question in Exercises 41-64. Round...Ch. 2.2 - Write each expression using base e rather than...Ch. 2.2 - Prob. 66ECh. 2.2 - Prob. 67ECh. 2.2 - Approximate each expression in the form ax without...Ch. 2.2 - Prob. 69ECh. 2.2 - Prob. 70ECh. 2.2 - Prob. 71ECh. 2.2 - Prob. 72ECh. 2.2 - Prob. 73ECh. 2.2 - Prob. 74ECh. 2.2 - Prob. 75ECh. 2.2 - Prob. 76ECh. 2.2 - Minority Population The U.S. Census Bureau has...Ch. 2.2 - Bald Eagle Population The U.S. Fish & Wildlife...Ch. 2.2 - Population Growth Two species of squirrels inhabit...Ch. 2.2 - Population Growth In July 1994, the population of...Ch. 2.2 - Prob. 81ECh. 2.2 - Prob. 82ECh. 2.2 - Find the value of the index of diversity for...Ch. 2.2 - Prob. 84ECh. 2.2 - Prob. 85ECh. 2.2 - Prob. 86ECh. 2.2 - Drug Concentration When a pharmaceutical drug is...Ch. 2.2 - Tumor Growth An article on growth rates of cancer...Ch. 2.2 - Prob. 89ECh. 2.2 - Prob. 90ECh. 2.2 - Torontos Jewish Population The table gives the...Ch. 2.2 - OTHER APPLICATIONS Music Theory A music theorist...Ch. 2.2 - OTHER APPLICATIONS Evolution of languages The...Ch. 2.2 - Prob. 94ECh. 2.2 - Prob. 95ECh. 2.2 - Earthquake Intensity The magnitude of an...Ch. 2.2 - Acidity of a solution A common measure for the...Ch. 2.3 - YOUR TURN Find the growth function if 5 g grows...Ch. 2.3 - Prob. 2YTCh. 2.3 - In the exponential growth or decay function...Ch. 2.3 - Prob. 2ECh. 2.3 - Prob. 3ECh. 2.3 - Prob. 4ECh. 2.3 - Prob. 5ECh. 2.3 - Prob. 6ECh. 2.3 - Giardia When a person swallows giardia cysts,...Ch. 2.3 - Growth of Bacteria A culture contains 25,000...Ch. 2.3 - Decrease in Bacteria When an antibiotic is...Ch. 2.3 - Growth of Bacteria The growth of bacteria in food...Ch. 2.3 - Prob. 11ECh. 2.3 - Chromosomal Abnormality The graph below shows how...Ch. 2.3 - Botany A group of Tasmanian botanists have claimed...Ch. 2.3 - Decay of Radioactivity A large cloud of...Ch. 2.3 - Prob. 15ECh. 2.3 - Prob. 16ECh. 2.3 - Carbon Dating Refer to Example 2. A sample from a...Ch. 2.3 - Half Life Find the half-life of each radioactive...Ch. 2.3 - Half Life Find the half life of each radioactive...Ch. 2.3 - Half-Life The half-life of plutonium-241 is...Ch. 2.3 - Half-Life The half-life of radium-226 is...Ch. 2.3 - Radioactive Decay 500 g of iodine-131 is decaying...Ch. 2.3 - Radioactive Decay 25 g of polonium-210 is decaying...Ch. 2.3 - Nuclear Energy Nuclear energy derived from...Ch. 2.3 - Chemical Dissolution The amount of chemical that...Ch. 2.3 - Newtons Law of Cooling Newtons law of cooling says...Ch. 2.3 - Newtons Law of Cooling Newtons law of cooling says...Ch. 2.3 - Newtons Law of Cooling Newtons law of cooling says...Ch. 2.4 - YOUR TURN a Convert 210 to radians. b Convert 3/4...Ch. 2.4 - Prob. 2YTCh. 2.4 - Prob. 3YTCh. 2.4 - Prob. 4YTCh. 2.4 - Prob. 5YTCh. 2.4 - Prob. 1ECh. 2.4 - Prob. 2ECh. 2.4 - Convert the following degree measures to radians....Ch. 2.4 - Prob. 4ECh. 2.4 - Prob. 5ECh. 2.4 - Prob. 6ECh. 2.4 - Prob. 7ECh. 2.4 - Prob. 8ECh. 2.4 - Prob. 9ECh. 2.4 - Prob. 10ECh. 2.4 - Prob. 11ECh. 2.4 - Prob. 12ECh. 2.4 - Prob. 13ECh. 2.4 - Prob. 14ECh. 2.4 - Convert the following radian measures to degrees....Ch. 2.4 - Prob. 16ECh. 2.4 - Prob. 17ECh. 2.4 - Prob. 18ECh. 2.4 - Prob. 19ECh. 2.4 - Prob. 20ECh. 2.4 - Prob. 21ECh. 2.4 - Prob. 22ECh. 2.4 - Prob. 23ECh. 2.4 - Prob. 24ECh. 2.4 - For Exercises 2532, complete the following table....Ch. 2.4 - Prob. 26ECh. 2.4 - Prob. 27ECh. 2.4 - Prob. 28ECh. 2.4 - Prob. 29ECh. 2.4 - For Exercises 2532, complete the following table....Ch. 2.4 - Prob. 31ECh. 2.4 - Prob. 32ECh. 2.4 - Find the following function values without a...Ch. 2.4 - Find the following function values without a...Ch. 2.4 - Prob. 35ECh. 2.4 - Prob. 36ECh. 2.4 - Prob. 37ECh. 2.4 - Prob. 38ECh. 2.4 - Find the following function values without a...Ch. 2.4 - Prob. 40ECh. 2.4 - Find the following function values without a...Ch. 2.4 - Find the following function values without a...Ch. 2.4 - Find the following function values without using a...Ch. 2.4 - Find the following function values without using a...Ch. 2.4 - Find the following function values without using a...Ch. 2.4 - Find the following function values without using a...Ch. 2.4 - Find the following function values without using a...Ch. 2.4 - Find the following function values without using a...Ch. 2.4 - Find all values of x between 0 and 2 that satisfy...Ch. 2.4 - Find all values of x between 0 and 2 that satisfy...Ch. 2.4 - Find all values of x between 0 and 2 that satisfy...Ch. 2.4 - Find all values of x between 0 and 2 that satisfy...Ch. 2.4 - Prob. 53ECh. 2.4 - Prob. 54ECh. 2.4 - Prob. 55ECh. 2.4 - Prob. 56ECh. 2.4 - Prob. 57ECh. 2.4 - Prob. 58ECh. 2.4 - Prob. 59ECh. 2.4 - Use a calculator to find the following function...Ch. 2.4 - Prob. 61ECh. 2.4 - Prob. 62ECh. 2.4 - Find the amplitude a and period T of each...Ch. 2.4 - Find the amplitude a and period T of each...Ch. 2.4 - Find the amplitude a and period T of each...Ch. 2.4 - Find the amplitude a and period T of each...Ch. 2.4 - Graph each function defined as follows over a...Ch. 2.4 - Graph each function defined as follows over a...Ch. 2.4 - Graph each function defined as follows over a...Ch. 2.4 - Graph each function defined as follows over a...Ch. 2.4 - Graph each function defined as follows over a...Ch. 2.4 - Graph each function defined as follows over a...Ch. 2.4 - Graph each function defined as follows over a...Ch. 2.4 - Graph each function defined as follows over a...Ch. 2.4 - Prob. 75ECh. 2.4 - Prob. 76ECh. 2.4 - Prob. 77ECh. 2.4 - Transylvania Hypothesis The Transylvania...Ch. 2.4 - Prob. 79ECh. 2.4 - Prob. 80ECh. 2.4 - Prob. 81ECh. 2.4 - Prob. 82ECh. 2.4 - Prob. 83ECh. 2.4 - Prob. 84ECh. 2.4 - Prob. 85ECh. 2.4 - Prob. 86ECh. 2.4 - Sound Suppose the A key above Middle C is played...Ch. 2.4 - Temperature The maximum afternoon temperature in...Ch. 2.4 - Temperature A mathematical model for the...Ch. 2.4 - Prob. 90ECh. 2.4 - Prob. 91ECh. 2.4 - Prob. 92ECh. 2.CR - Prob. 1CRCh. 2.CR - Prob. 2CRCh. 2.CR - Prob. 3CRCh. 2.CR - Prob. 4CRCh. 2.CR - Determine whether each of the following statement...Ch. 2.CR - Prob. 6CRCh. 2.CR - Prob. 7CRCh. 2.CR - Prob. 8CRCh. 2.CR - Prob. 9CRCh. 2.CR - Prob. 10CRCh. 2.CR - Prob. 11CRCh. 2.CR - Prob. 12CRCh. 2.CR - Prob. 13CRCh. 2.CR - Prob. 14CRCh. 2.CR - Prob. 15CRCh. 2.CR - Prob. 16CRCh. 2.CR - Prob. 17CRCh. 2.CR - Prob. 18CRCh. 2.CR - Prob. 19CRCh. 2.CR - Prob. 20CRCh. 2.CR - Prob. 21CRCh. 2.CR - Prob. 22CRCh. 2.CR - Prob. 23CRCh. 2.CR - Prob. 24CRCh. 2.CR - Prob. 25CRCh. 2.CR - Prob. 26CRCh. 2.CR - Prob. 27CRCh. 2.CR - Prob. 28CRCh. 2.CR - Prob. 29CRCh. 2.CR - Prob. 30CRCh. 2.CR - Prob. 31CRCh. 2.CR - Prob. 32CRCh. 2.CR - Prob. 33CRCh. 2.CR - Prob. 34CRCh. 2.CR - Prob. 35CRCh. 2.CR - Prob. 36CRCh. 2.CR - Prob. 37CRCh. 2.CR - Prob. 38CRCh. 2.CR - Prob. 39CRCh. 2.CR - Prob. 40CRCh. 2.CR - Prob. 41CRCh. 2.CR - Prob. 42CRCh. 2.CR - Prob. 43CRCh. 2.CR - Prob. 44CRCh. 2.CR - Prob. 45CRCh. 2.CR - Prob. 46CRCh. 2.CR - Prob. 47CRCh. 2.CR - Prob. 48CRCh. 2.CR - Prob. 49CRCh. 2.CR - Prob. 50CRCh. 2.CR - Prob. 51CRCh. 2.CR - Prob. 52CRCh. 2.CR - Prob. 53CRCh. 2.CR - Prob. 54CRCh. 2.CR - Prob. 55CRCh. 2.CR - Prob. 56CRCh. 2.CR - Prob. 57CRCh. 2.CR - Prob. 58CRCh. 2.CR - Prob. 59CRCh. 2.CR - Prob. 60CRCh. 2.CR - Prob. 61CRCh. 2.CR - Prob. 62CRCh. 2.CR - Prob. 63CRCh. 2.CR - Prob. 64CRCh. 2.CR - Prob. 65CRCh. 2.CR - Prob. 66CRCh. 2.CR - Prob. 67CRCh. 2.CR - Prob. 68CRCh. 2.CR - Prob. 69CRCh. 2.CR - Prob. 70CRCh. 2.CR - Prob. 71CRCh. 2.CR - Prob. 72CRCh. 2.CR - Prob. 73CRCh. 2.CR - Prob. 74CRCh. 2.CR - Prob. 75CRCh. 2.CR - Prob. 76CRCh. 2.CR - Prob. 77CRCh. 2.CR - Prob. 78CRCh. 2.CR - Prob. 79CRCh. 2.CR - Prob. 80CRCh. 2.CR - Prob. 81CRCh. 2.CR - Prob. 82CRCh. 2.CR - Prob. 83CRCh. 2.CR - Prob. 84CRCh. 2.CR - Prob. 85CRCh. 2.CR - Prob. 86CRCh. 2.CR - Prob. 87CRCh. 2.CR - Prob. 88CRCh. 2.CR - Prob. 89CRCh. 2.CR - Prob. 90CRCh. 2.CR - Find each function value without using a...Ch. 2.CR - Prob. 92CRCh. 2.CR - Prob. 93CRCh. 2.CR - Prob. 94CRCh. 2.CR - Prob. 95CRCh. 2.CR - Prob. 96CRCh. 2.CR - Prob. 97CRCh. 2.CR - Prob. 98CRCh. 2.CR - Prob. 99CRCh. 2.CR - Prob. 100CRCh. 2.CR - Prob. 101CRCh. 2.CR - Prob. 102CRCh. 2.CR - Prob. 103CRCh. 2.CR - Prob. 104CRCh. 2.CR - Prob. 105CRCh. 2.CR - Prob. 106CRCh. 2.CR - Glucose Concentration When glucose is infused into...Ch. 2.CR - Prob. 108CRCh. 2.CR - Cancer growth Cancer cells often have a diameter...Ch. 2.CR - Prob. 110CRCh. 2.CR - Respiratory Rate Researchers have found that the...Ch. 2.CR - Prob. 112CRCh. 2.CR - Prob. 113CRCh. 2.CR - Prob. 114CRCh. 2.CR - Prob. 115CRCh. 2.CR - Prob. 116CRCh. 2.CR - Prob. 117CRCh. 2.CR - Prob. 118CRCh. 2.CR - Prob. 119CRCh. 2.CR - Prob. 120CRCh. 2.CR - Prob. 121CRCh. 2.CR - Prob. 122CRCh. 2.CR - Prob. 123CRCh. 2.CR - Prob. 124CRCh. 2.CR - Prob. 125CRCh. 2.CR - Prob. 126CRCh. 2.CR - Temperature The table lists the average monthly...Ch. 2.EA - Determine whether each of the following statement...Ch. 2.EA - Prob. 2EA
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, calculus and related others by exploring similar questions and additional content below.Similar questions
- 3. Solve the equation, give the answer exactly (no calculator approximations), and show all your work. (4 points) log5 2x = 3arrow_forwardLet I = f(x) dx, where f is the function whose graph is shown. 4 2 y f X 1 2 3 4 (a) Use the graph to find L2, R2 and M2. R₂ M2 = = = (b) Are these underestimates or overestimates of I? O 42 is an underestimate. O 42 is an overestimate. ◇ R2 is an underestimate. OR2 is an overestimate. OM2 is an underestimate. ○ M2 is an overestimate. (c) Use the graph to find T2. T₂ =arrow_forwardVector u has a magnitude of 23 and vector v has a magnitude of 83. The angle between the two vectors is 126 degrees.a) Draw a fully-labelled vector diagram showing the two vectors and the resultant vector when they are added together.b) Find the magnitude of the resultant vector.c) Find the direction of the resultant vector relative to vector u. Solding by finding the x and y of the vectors and addingarrow_forward
- 3) If a is a positive number, what is the value of the following double integral? 2a Love Lv 2ay-y² .x2 + y2 dadyarrow_forward16. Solve each of the following equations for x. (a) 42x+1 = 64 (b) 27-3815 (c) 92. 27² = 3-1 (d) log x + log(x - 21) = 2 (e) 3 = 14 (f) 2x+1 = 51-2xarrow_forward11. Find the composition fog and gof for the following functions. 2 (a) f(x) = 2x+5, g(x) = x² 2 (b) f(x) = x²+x, g(x) = √√x 1 (c) f(x) = -1/2) 9 9(x) = х = - Xarrow_forward
- practice problem please help!arrow_forward13. A restaurant will serve a banquet at a cost of $20 per person for the first 50 people and $15 for person for each additional person. (a) Find a function C giving the cost of the banquet depending on the number of people p attending. (b) How many people can attend the banquet for $2000?arrow_forwardAlt Fn Ctrl 12. Find functions f and g such that h(x) = (fog)(x). (a) h(x) = (x² + 2)² x+1 (b) h(x) = 5 3arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Algebra & Trigonometry with Analytic GeometryAlgebraISBN:9781133382119Author:SwokowskiPublisher:Cengage
Mathematics For Machine TechnologyAdvanced MathISBN:9781337798310Author:Peterson, John.Publisher:Cengage Learning,
Algebra: Structure And Method, Book 1AlgebraISBN:9780395977224Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. ColePublisher:McDougal Littell
College Algebra (MindTap Course List)AlgebraISBN:9781305652231Author:R. David Gustafson, Jeff HughesPublisher:Cengage Learning
Algebra & Trigonometry with Analytic Geometry
Algebra
ISBN:9781133382119
Author:Swokowski
Publisher:Cengage
Mathematics For Machine Technology
Advanced Math
ISBN:9781337798310
Author:Peterson, John.
Publisher:Cengage Learning,
Algebra: Structure And Method, Book 1
Algebra
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:McDougal Littell
College Algebra (MindTap Course List)
Algebra
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:Cengage Learning
Interpreting Graphs of Quadratic Equations (GMAT/GRE/CAT/Bank PO/SSC CGL) | Don't Memorise; Author: Don't Memorise;https://www.youtube.com/watch?v=BHgewRcuoRM;License: Standard YouTube License, CC-BY
Solve a Trig Equation in Quadratic Form Using the Quadratic Formula (Cosine, 4 Solutions); Author: Mathispower4u;https://www.youtube.com/watch?v=N6jw_i74AVQ;License: Standard YouTube License, CC-BY