Brett has determined a function f(x) that shows the exponential growth of the number of shoes Larae owns each year. Explain how the f^−1(x) can be found and what f^−1(132) means.

Question

sidsiddhartha · Answer

f^(-1) [x] is the inverse function of f(x), it can be found by replacing the x and y values

sidsiddhartha · Answer

take a example 
$$f(x)=x+3$$
$$y=x+3$$
then the inverse will be
x = y + 3
x - 3= y
$$f^{-1}(x)=x-3$$
like this

anonymous · Answer

ohk so how would I find out what f^−1(132) means?

sidsiddhartha · Answer

for f^{-1}(132) you input 132 into the x value(s) of the inverse function and evaluate it.
then you would plot the points on a graph where x is 132 and y is the result of 132 input in the function

anonymous · Answer

is that all I do?

sidsiddhartha · Answer

yup that'll be all

anonymous · Answer

thanks!

sidsiddhartha · Answer

yw!!