If f (x) = x2 + ax – 10 and f’ (5) = 13, than what is a?
A. 3/5
B. 13/10




C. 13/5
D.
3


2
the answer is D.
Gimana cara nya?
f(x) = x^2 + ax - 10 so f`(x) = 2x + a
given that f `(5) = 13 then 13 = 2.5 + a
so the conclusion is a = 3.
Komentar sudah dihapus
sama-sama

Jawabanmu

2014-02-08T19:10:33+07:00
F(5) = 5.2 +5a-10
13=10+5a-10
13=5a
13/5=a

Jawab : C



itu x nya pangkat 2, bukan di kali 2. Lalu yang ditanya adalah F' (f aksen) (5)
2014-02-08T19:58:27+07:00
F(5) = 5.2 + a.5 - 10 13 = 10 + 5a - 10 13 = 5a a = 13/5