diketahui f(x) = (2x²+3x - 1)³ dan f'(x) turunan pertama f(x) . nilai f'(-2)

Misal U = 2x² +3x - 1
dy/du = 3U²
du/dx = 4x + 3

dy/dx = dy/du
.du/dx
dy/dx = 3 U² .4x +3
= 3( 2x² +3x -1) ( 4x + 3)
f(-2) = 3( 8 +6-1) ( -8 +3)
= 3(13) (-5)
= -195