1.

The nth derivative of x2y2 + (1-x2)y1 + xy = 0 is,

A. x2yn+2 + yn(2n2-2n-2nx+x) – yn-1(2n2-3n)=0
B. x2yn+2 + yn+1(2nx-x2) + yn(2n2-2n-2nx+x) – yn-1(2n2-3n)=0
C. x2yn+2 + yn+1(2nx+1-x2) + yn(2n2-2n-2nx+x)-yn – 1(2n2-3n)=0
D. x2yn+2 + yn+1(2nx+1-x2) + xyn2n2-yn – 1(2n2-3n)=0
Answer» D. x2yn+2 + yn+1(2nx+1-x2) + xyn2n2-yn – 1(2n2-3n)=0


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