f(x) = x^3 + x h(x) is the inverse of f(x) Find the derivative of h(2), step by step please. Thanks in advance!
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(only one real root). Now, using a well known theorem:
Originally Posted by FernandoRevilla (only one real root). Now, using a well known theorem: Thank you, but I'm not sure I understand yet. Why did you set f(x) = 2 for the first step? What process are you using?
Originally Posted by TWN Thank you, but I'm not sure I understand yet. Why did you set f(x) = 2 for the first step? What process are you using? He is using the inverse function theorem, , which is indeed very well known. You should familiarize yourself with it. To find , we want to know . So we set so . Now make the substitutions, and finish it.
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