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Mathematics 21 Online
OpenStudy (anonymous):

MEDAL WILL BE AWARDED - FULL WORKINGS PRETTY PLEASE - For a curve with equation y = 3x2 − x: find the gradient of chord PQ, where P is the point (1, 2) and Q is the point ((1+h),3(1+h)2 −(1+h)) - ps i got 3h+1 the answer says its meant to be 3h + 5

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