SOLUTION: How do you do y=f^-1(x)?

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Question 198221: How do you do y=f^-1(x)?
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


Start with f(x) equals some expression involving x. Then replace f(x) with y. Next, solve the equation for x in terms of y. Finally, swap x for y and y for x. The only thing is that you have to make sure that the inverse is still a function.

Example:









Now swap the variables:



so




John