Concept explainers
To find : the graph of data found relating the rate of interest and time required for investment to Triple for both compound continuously and annually.
Answer to Problem 18E
The equation relating the rate of interest (r) and time (t) in years:
For investment compounded continuously is given by:
For investment compounded annually is given by:
Explanation of Solution
Given information : Annual rate of interest is given by r & time (number of years) is given by t.
The completed table for time t (in years) necessary for P dollars to triple when it is invested at an interest rate r compounded continuously is given below:
r | ||||||
t (in years) | 54.93 | 27.47 | 18.31 | 13.73 | 10.99 | 9.16 |
The completed table for time t (in years) necessary for P dollars to triple when it is invested at an interest rate r compounded annually is given below:
r | ||||||
t (in years) | 55.48 | 28.01 | 18.85 | 14.27 | 11.53 | 9.69 |
Concept Involved:
We need to make us of the below steps to graph the set of data given in the calculator
Steps | Description |
Enter the data into the lists. For basic entry of data, see Basic Commands. |
Steps | Description |
Go to STATPLOT (2nd Y=) and choose the first plot. Turn the plot ON, set the icon to Scatter Plot (the first one), set Xlist to L1 and Ylist to L2 (assuming that is where you stored the data), and select a Mark of your choice. | |
Press STAT, arrow right to CALC, and arrow down to A: PwrReg. Hit ENTER. When PwrReg appears on the home screen, type the parameters L1, L2, Y1. The Y1 will put the equation into Y= for you. (Y1 comes from VARS ? YVARS, #Function, Y1) | |
Graph the Power Regression Equation from Y1. ZOOM #9 ZoomStat to see the graph. |
Graph:
Interpretation:
The equation relating the rate of interest (r) and time (t) in years for investment compounded continuously is given by:
The equation relating the rate of interest (r) and time (t) in years for investment compounded annually is given by:
Chapter 3 Solutions
EBK PRECALCULUS W/LIMITS
- Calculus: Early TranscendentalsCalculusISBN:9781285741550Author:James StewartPublisher:Cengage LearningThomas' Calculus (14th Edition)CalculusISBN:9780134438986Author:Joel R. Hass, Christopher E. Heil, Maurice D. WeirPublisher:PEARSONCalculus: Early Transcendentals (3rd Edition)CalculusISBN:9780134763644Author:William L. Briggs, Lyle Cochran, Bernard Gillett, Eric SchulzPublisher:PEARSON
- Calculus: Early TranscendentalsCalculusISBN:9781319050740Author:Jon Rogawski, Colin Adams, Robert FranzosaPublisher:W. H. FreemanCalculus: Early Transcendental FunctionsCalculusISBN:9781337552516Author:Ron Larson, Bruce H. EdwardsPublisher:Cengage Learning