Question 237792
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Just substitute whatever is in the parentheses next to the f for the variable in the definition.


If


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ f(x)\ =\ 3x\ -\ 2],


then


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ f(2)\ =\ 3(2)\ -\ 2]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ f(4)\ =\ 3(4)\ -\ 2]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ f(a)\ =\ 3(a)\ -\ 2]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ f\left(\frac{z^4w^5}{2-k^2r}\right)\ =\ 3\left(\frac{z^4w^5}{2-k^2r}\right)\ -\ 2]


Then simplify wherever possible.  Just a little arithmetic for your two problems.



John
*[tex \LARGE e^{i\pi} + 1 = 0]
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