dy/dx= 2kx-8 its given turning point at (3,4). find the value of k
dy/dx = 0 at a turning point.
So
2kx-8 = 0 at the given turning point (3,4)
At the point (3,4) x = 3.
Substitute in 2kx-8 = 0 to get
6k-8 = 0
k=8/6 or 4/3
