Precalculus with Limits: A Graphing Approach, Sixth Edition
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Precalculus with Limits: A Graphing Approach, Sixth Edition View details
7. Inverse Trigonometric Functions
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Exercise 1 Page 322

What notations for the inverse sine function do you know?

y=sin ^(- 1)x, - 1≤ x ≤ 1

We are asked to fill in the blanks to complete the information about the inverse sine function.

Function Alternative Notation Domain Range
y=arcsin x - π/2 ≤ y ≤ π/2

Let's start by recalling that on the restricted domain - π2 ≤ x ≤ π2, the function y=sin x is one-to-one and has a unique inverse function. This function is called the inverse sine function and is denoted by y=arcsin x or y=sin ^(- 1) x. It is defined by y=arcsin x if and only if sin y=x where - 1≤ x ≤ 1 and - π2 ≤ y ≤ π2. Let's take a look at the graph of y=arcsin x.

Inverse sine function

We can see that the domain of y=arcsin x is - 1≤ x ≤ 1 and the range is - π2 ≤ y ≤ π2. Now we can fill in the blanks.

Function Alternative Notation Domain Range
y=arcsin x y=sin ^(- 1)x - 1≤ x ≤ 1 - π/2 ≤ y ≤ π/2