Question

determine k de modo que as funcao f(×)=-2×^2+(k+1)×+2 tenha valor máximo pra x=3​

Answer 1

xv = 3

-b/2a = 3

-(k+1)/2(-2) = 3

-(k+1)/-4 = 3

(k+1)/4 = 3

(k+1) = 12

k = 11 ✓