A curve is given by
f(x)=6x+8x−5f(x) = 6\sqrt{x} + \frac{8}{x} - 5f(x)=6x+x8−5
Not one of these three terms looks like xnx^nxn at first glance, yet all three are powers of xxx in disguise.
What is the slope of this curve at x=4x = 4x=4 — that is, what is f′(4)f'(4)f′(4)?
Select all that apply.
111
222
52\frac{5}{2}25
−4-4−4