Question

Determine a Im(f) da função quadrática f(x) = x² + 4x - 2.

Answer 1

$\mathsf{\Delta=16+8=24}\\\mathsf{y_{v}=-\dfrac{\Delta}{4a}}\\\mathsf{y_{v}=-\dfrac{24}{4.1}=-6}$

$\boxed{\boxed{\boxed{\mathsf{Imf(x)=\{y\in\mathbb{R}|y\ge-6\}}}}}$