SOLUTION: what is the inverse of f(x)= 2x+1 ? what is the inverse of f(x)= x(to the second power) -3?

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Question 44776: what is the inverse of f(x)= 2x+1 ?
what is the inverse of f(x)= x(to the second power) -3?
Answer by Nate(3500) About Me  (Show Source):
You can put this solution on YOUR website!
f(x) = 2x + 1
y = 2x + 1
x = 2y + 1
x - 1 = 2y
0.5x - 0.5 = f^-1(x)
+graph%28+600%2C+600%2C+-10%2C+10%2C+-10%2C+10%2C+2x+%2B+1%2C+0.5x+-+0.5%2C+x%29+
f(x) = x^2 - 3
y = x^2 - 3
x = y^2 - 3
x + 3 = y^2
+- sqrt(x + 3) = f^-1(x)