Question

Na fórmula F : 2x³ - 4x² + 1, se x : ½, então o valor de F é:

Answer 1

$f(\frac{1}{2}) = 2(\frac{1}{2})^3-4(\frac{1}{2})^2+1$

$f(\frac{1}{2}) = 2(\frac{1}{8})-4(\frac{1}{4})+1$

$f(\frac{1}{2}) = \frac{1}{4}-1+1$

$f(\frac{1}{2}) = \frac{1}{4}$