Question 351850
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If you mean


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ f(x)\ =\ x^3\ +\ 10]


Then yes it is non-linear and it is a function, and no, it was not written correctly.  You should have written


*[tex \LARGE \ \ \ \ \ \ \ \ \ \]f(x) = x^3 + 10



John
*[tex \LARGE e^{i\pi} + 1 = 0]
My calculator said it, I believe it, that settles it
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