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What is the equation of the line normal to $f (x) = x ln (x^{3} - x)$ $f(x)=xln(x^3-x)$ at $x = 1$ $x=1$ ?

1 Answer

Apr 30, 2016

I am not sure you can have it. The function is not defined at $x = 1$ $x=1$ !

Explanation:

At $x = 1$ $x=1$ you have $ln 0$ $ln0$ ...!

Graphically:
graph{xln(x^3-x) [-18.02, 18.03, -9.01, 9.01]}

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