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  • Usuário do Brainly
2014-08-28T18:09:56-03:00
F(x)=-5x²+3x-1

Xv=-b/2a

Yv=-Δ/4a

achar o delta

Δ=b²-4ac
Δ=9-20
Δ=-11

Xv=- \frac{b}{2a} = \frac{-3}{-10} = \frac{3}{10}

Yv= \frac{11}{4(-5)}= \frac{11}{-20} =- \frac{11}{20}

V( \frac{3}{10} ,- \frac{11}{20} )
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