- #1

gillgill

- 128

- 0

Determine a value of the constant b so that the graph of y=x^2+bx+17 has a horizontal tangent at (2, 21+2b)

ans: y'(2)=0

y'=2x+b

0=2(2)+b

b=-4

what do u need the y-coordinate (21+2b)for?

My teacher also requires me to draw a diagram...can anybody show me a diagram of this problem?