The matrix that connects r, to x, y is in 37. Invert that matrix: J 1 = r/ x r/ y / x /
Chapter 4, Problem 4.4.39(choose chapter or problem)
The matrix that connects r, to x, y is in 37. Invert that matrix: J 1 = r/ x r/ y / x / y = cos ? ? ? =? It is surprising that r/ x = x/ r. The product JJ1 = I gives the chain rule x x = x r r x + x x = 1.
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