Question

A derivada da função f(x) = 5x^{2} -3x +7 é?

a) 10x - 3
b) 7x + 5
c) 8x - 4
d) 5x - 7

Answer 1

$f(x)=5x^2-3x+7\\\\f'(x)=2\cdot5\cdot\,x^1-1\cdot3\cdot\,x^0+0\cdot7\\\\\boxed{f'(x)=10x-3}$