What is $f (a + 2)$ $f(a+2)$ if $f (x) = 3 x + \frac{5}{x}$ $f(x)=3x+5/x$ ?

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Answer 1 · 2017-08-30T02:04:55

$f (a + 2) = 3 (a + 2) + \frac{5}{a + 2}$ $f(a+2)= 3(a+2)+5/(a+2)$

Given a defined function $f (x)$ $f(x)$ , we can evaluate the function at any constant by replacing every $x$ $x$ with that constant.

So if $f (x) = 3 x + \frac{5}{x}$ $f(x) = 3x+5/x$ , then $f (a + 2) = 3 (a + 2) + \frac{5}{a + 2}$ $f(a+2) = 3(a+2)+5/(a+2)$

What is f(a+2)f(a+2) if f(x)=3x+5xf(x)=3x+5/x?