tentukan nilai turunan dari f(x) = (2x-3)(x+4) untuk x =2

Bab Differensial
Matematika SMA Kelas XI

f(x) = (2x - 3) (x + 4)
f(x) = 2x² + 5x - 12
f'(x) = 4x + 5
f'(2) = 4 . 2 + 5
f'(2) = 13

f(x) = (2x-3)(x+4)
f(x) = 2x^2+8x-3x-12
f(x) = 2x^2+5x-12
F'(x) = 4X+5
F'(2) = 4(2)+5
= 8+5 = 12
# rumus turunan
F(x) = x^n-1
Cth : x^3 = x^3-1 = x^2
* 2X^3 = 2.3X^3-1 = 6x^2