Math, asked by keshavsinghsahu, 16 days ago

28. The differential equation Mdx+Ndy=0 is exact if
(A) delM/dely=delN/delx
(B) delM/delx=delN/dely
(C) M+N=0
(D) none of these

Answers

Answered by unadpotrasufiya

3

Answer:

d) non of these . .

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