SOLUTION: Find the value of {{{f^-1}}}8, when f(R)=R is defined by f(x+5)={{{x^3+7x+8}}}
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Question 1037858: Find the value of 8, when f(R)=R is defined by f(x+5)=
Answer by josgarithmetic(39620) (Show Source): You can put this solution on YOUR website!
Move back by five units on x, in the function.
, simplify, and then try to find the inverse of f.
Try restating this as (x-5)^3+7(x-5)+8=y; and then after simplifying, switch x and y. TRY to solve for y in terms of x. If this is possible, then you found the inverse. DOES THIS WORK? You'll just have to try it to see if it works or not.
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