1.

Find nth derivative of x2y2 + xy1 + y = 0

A. x2yn+2 + (2n+1)xyn+1 + (n2+1)yn = 0
B. x2yn+2 + nxyn+1 + (n2+1)yn = 0
C. x2yn+2 + (2n+1)xyn+1 + n2yn = 0
D. x2yn+2 + 2nxyn+1 + n2yn = 0
Answer» B. x2yn+2 + nxyn+1 + (n2+1)yn = 0


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