In class we saw that tan x + sec x dx tan x + sec x SEC x dx sec x · sec x tan x + sec2 x dx sec x + tan x du и In sec x + tan x + C where we used the u-substitution u = sec x + tan x. In this problem, you will derive the antiderivative of f(x) = sec x in another way. (a) Observe that COS x COS x cos? x COS x 1– sin? x COS x COs x 2 |1+ sin x 1– sin x 1+ sin x Show that SEC x dx In + C. [Hint: In(a) = ln(Va)] 1– sin x (b) Continuing from (a), show that f sec x dx = ln | sec x + tan x| + C. [Hint: You can use the multiply by 1 trick.] (c) What about this method is inspired from partial fractions?

The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products.

Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 …

The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.

Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experime…