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发帖数: 4 | 1 Let C be a curve in the plane, i.e. C is the image of a smooth (= infinitely
differentiable) function f:[0,1]---R^2. Let T be the tangent line to C at
the point f(t0)=(x0,y0). Prove carefully that an affine transformation A
takes A(T) to the tangent line of A(C)=A(f([0,1])) at A(x0,y0). |
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