Y=x^2-2x-8 y=-8;7. x-?

Question

Y=x^2-2x-8 y=-8;7. x-?

Answer 1

Решение. y(x)= x^2 - 8*x + 7; dy(x)/dx=2*x-8=0; x=4; y(4)=16-32+7=-9;