Question

01-Seja a função f(x)= 3.x² + 5.x - 7, qual o coeficiente angular dessa função?
a) 3
b) 5
c)-7
d) - 3
e) -5​

Answer 1

$f\left(x\right)=3\cdot \:x^2+5\cdot \:x-7\\\\\frac{d}{dx}\left(3x^2+5x-7\right)\\\\=\frac{d}{dx}\left(3x^2\right)+\frac{d}{dx}\left(5x\right)-\frac{d}{dx}\left(7\right)\\\\Simplificando\\ \\=6x+5-0\\\\=6x+5$

Coeficiente angular é 5

LETRA B