Question

Det. coordonatele vf. parabolei :
a) f(x)= 2x²-5x

Answer 1

Salut,

$x_{v\hat{a}rf}=-\dfrac{b}{2a}=-\dfrac{-5}{2\cdot 2}=\dfrac{5}{4};\\\\\\y_{v\hat{a}rf}=-\dfrac{\Delta}{4a}=-\dfrac{b^2-4ac}{4\cdot a}=-\dfrac{(-5)^2-4\cdot 2\cdot 0}{4\cdot 2}=-\dfrac{25}{8}.$

Green eyes.