Page 152: inside "Approach 2", vector x should be with respect to (c1, c2) instead of (b1, b2)?

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Page 152: inside "Approach 2", vector x should be with respect to (c1, c2) instead of (b1, b2)? #646

Open stephykm0117 opened 3 years ago

stephykm0117 commented 3 years ago

I am not entirely sure about the change, but I think the matrix J is mapping from C to B: i.e. x = x1 c1 + x2 c2 = y1 b1 + y2 b2 = y so vector x is a coordinate vector w.r.t. (c1, c2) and y is a coordinate vector w.r.t. (b1, b2).

I am a newbie and this is quite confusing to me, please explain if I am wrong, thanks a lot.