For the function y = f(x) = x^5 + 2x^3 + 3x + 1
How do I go about expressing x in terms of y?
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Post the original question! What I've highlighted in red implies crucial missing information - it's almost certain that you don't have to find the rule for the inverse function.
It seems that I have repeated myself as I am having difficulty understanding the question I am trying to answer - it was not intentional and I apologise.
I have to prove that f^-1(7) = 1 and I don't know how to do this without knowing the inverse of the function given.Originally Posted by Mr Fantastic