The curve C has equation y = f(x)
Given that dy/dx = 3x^2 - 20x + 29
And that C passes thru the point P(2,6)
And C goes through the point (4,0)
Find an equation of the the tangent to C at P (the answer is y = x+4)
The tangent to C at the point Q is parallel to the tangent at P, so calculate the xcoord of Q.
So far I have worked out the gradient of Q's tangent is 1..
what next?
thanks