f(x, y) is a function of two variables x and y that we wish to change to
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f(x, y) is a function of two variables x and y that we wish to change to variables s and t, where s = x2 – y2, t = xy. Determine fxx and fyy in terms of s, t, fs, ft, fss, ftt and fst. Show that
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fxx + fyy = (s + 4t)(4ss +f1)
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Using the chain rule afaf s fx fy af d t f t t af 2x s 2 af s af X af at Differ...View the full answer
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