Writing the inverse of another function as an inverse function

Writing the inverse of another function as an inverse function

Assessment

Interactive Video

Mathematics

11th Grade - University

Hard

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The video tutorial explains how to find the inverse of a function, specifically F(x) = 2x^2 - 3. It covers the step-by-step method to rewrite the function as an equation, swap variables, and solve for Y using inverse operations. The tutorial emphasizes the importance of including both positive and negative square roots but highlights that only the positive value is used to maintain the function's integrity.

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5 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the first step in finding the inverse of a function?

Divide by 2

Take the square root

Add 3 to both sides

Replace F(x) with y

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

After swapping x and y, what operation is performed next?

Subtract 3

Divide by 2

Add 3

Multiply by 2

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is it necessary to include both positive and negative square roots initially?

To make the function continuous

To simplify the equation

To ensure the equation is balanced

To account for all possible solutions

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why do we only consider the positive square root when writing the inverse as a function?

To match the original function

To avoid complex numbers

To simplify calculations

To ensure the inverse is a function

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the final form of the inverse function?

F inverse of x = 2(x + 3)

F inverse of x = (x + 3)^2 / 2

F inverse of x = -sqrt(x + 3) / 2

F inverse of x = sqrt(x + 3) / 2