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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}dxdyโ
Find both coordinates of the point
Use point & gradient in yโy1=m(xโx1)y - y_1 = m(x - x_1)yโy1โ=m(xโx1โ)
โ1m-\frac{1}{m}โm1โ
3x2+63x^2 + 63x2+6
8x+18x + 18x+1
15x3215x^{\frac{3}{2}}15x23โ
โ2<x<2-\sqrt{2} < x < \sqrt{2}โ2โ<x<2โ
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