Solved on Jan 25, 2024

Find the inverse function of y=x1+3y=\sqrt{x-1}+3

STEP 1

Assumptions
1. The given relation is y=x1+3 y = \sqrt{x - 1} + 3 .
2. To find the inverse, we need to solve for x x in terms of y y .
3. The domain of the function y=x1+3 y = \sqrt{x - 1} + 3 is x1 x \geq 1 since the square root function is defined for non-negative numbers.

STEP 2

To find the inverse of the relation, we first express y y in terms of x x and then swap x x and y y .
y=x1+3 y = \sqrt{x - 1} + 3

STEP 3

Subtract 3 from both sides of the equation to isolate the square root term.
y3=x1 y - 3 = \sqrt{x - 1}

STEP 4

Square both sides of the equation to eliminate the square root. Remember that squaring both sides of an equation is a valid operation, but we must be cautious of any restrictions that may arise from the domain of the original function.
(y3)2=(x1)2 (y - 3)^2 = (\sqrt{x - 1})^2

STEP 5

Simplify the right side of the equation by removing the square root.
(y3)2=x1 (y - 3)^2 = x - 1

STEP 6

Add 1 to both sides of the equation to solve for x x .
(y3)2+1=x (y - 3)^2 + 1 = x

STEP 7

Now, we have x x expressed in terms of y y . To write the inverse relation, we swap x x and y y .
y=(x3)2+1 y = (x - 3)^2 + 1

STEP 8

The inverse relation of y=x1+3 y = \sqrt{x - 1} + 3 is y=(x3)2+1 y = (x - 3)^2 + 1 , where the domain is x3 x \geq 3 to match the range of the original function and ensure the inverse is a function.

Was this helpful?
banner

Start learning now

Download Studdy AI Tutor now. Learn with ease and get all help you need to be successful at school.

ContactInfluencer programPolicyTerms
TwitterInstagramFacebookTikTokDiscord