The general solution of the equation (D-moD')²z = 0 is
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Answer:
Explanation:
1+x
2
2x
dx=
1+y
2
−2y
dy
⇒ log(1+x
2
)=−log(1+y
2
)+logk
⇒ (1+x
2
)(1+y
2
)=k
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