Question

Find constants a and b so that the minimum for the parabola f(x)=x^2+ax+b is at the point (3,7)

Answer 1

2x+a=0

2x=-a

2*3=-a

-6=a

b=put x and a and y

=16

Answer 2

i hope this is the answer

cheers

Answer 3

Kropot are u actually typing?

Answer 4

Differentiating the function with respect to x gives (2x + a)
For a maximum or a minimum put 2x + a = 0. Solving for a gives a = -6.
Further substitution gives b = 16