SOLUTION: 1. Find the inverse function of f. f(x)=the square root of 3-x

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Question 376320: 1. Find the inverse function of f. f(x)=the square root of 3-x
Found 2 solutions by user_dude2008, robertb:
Answer by user_dude2008(1862) About Me  (Show Source):
You can put this solution on YOUR website!
f(x)=sqrt(3-x)
y=sqrt(3-x)
x=sqrt(3-y)
x^2=3-y
y=-x^2+3
Answer: -x^2+3

Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
y+=+sqrt%283-x%29;
Interchange the places of x and y:
x+=+sqrt%283-y%29;
x%5E2+=+3+-+y;
y+=+3+-+x%5E2, this is the inverse function, BUT only for x that are in [0,infinity).