Question

The tangent to the curve 2y= 2x^2 -5x +4 at the point where x=1 is parallel to the normal to the curve y= ax^2 + bx +10 at the point (-2,2). Calculate the values of a and b.

The answers are a=1, b=6

Answer 1

yes, that is what I get also.

Answer 2

The answer is at the back of the book but I cannot understand how to get to that answer!