Let z=x²y, where x(s,t) and y(s,t) are differentiable functions with values Әx Əs x(2,0) = 4, y(2,0) = 3, ду (2,0) = 3, (2,0) = 2, 3 (2,0) = == Find az/as when (s, t) = (2,0). A. -24 B. 32 С. 48 D. 72 E. 104 ду Ət -2, (2,0) = -5.

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