* Exercises Show that y др 1. Obtain by using the chain rule if dr p = u³ cos v, u = xye²rs, v = s ln (3xyr). ƒ (kr² - k
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* Exercises Show that y др 1. Obtain by using the chain rule if dr p = u³ cos v, u = xye²rs, v = s ln (3xyr). ƒ (kr² - ky²) where k is a constant. 2. Given z = 3. If z = f In y X dz dx dz == ду +x- 3 0. (1 T əz show that y + dy X dz In yox = 0.