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#1 2007-06-10 19:21:49

Mel
Guest

Find co-ordinates

y= 2x^3
y'=6x^2     gradient = 2

Find the co-ordinates

#2 2007-06-10 20:38:22

JaneFairfax
Member
Registered: 2007-02-23
Posts: 6,868

Re: Find co-ordinates

Do you mean find the co-ordinates of the points on the curve y = 2x[sup]3[/sup] where the gradient is 2?

Well, put 6x[sup]2[/sup] = 2 and solve for x (you should have two answers). Then substitute each answer into y = 2x[sup]3[/sup] to get the corresponding y-coordinate.
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