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10 cards from this deck
Straight line touching curve only once at that point
Its tangent at that point
Find gradient function dydx\frac{dy}{dx}dxdy
Find both coordinates of the point
Use point & gradient in y−y1=m(x−x1)y - y_1 = m(x - x_1)y−y1=m(x−x1)
−1m-\frac{1}{m}−m1
3x2+63x^2 + 63x2+6
8x+18x + 18x+1
15x3215x^{\frac{3}{2}}15x23
−2<x<2-\sqrt{2} < x < \sqrt{2}−2<x<2
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