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अवकल समीकरण `(dy).(dx)=(1+y^2)/(1+x^2)` का व्यापक हल है -A. `tan^(-1)(y+x)=c`B. `tan^(-1)(cy)=c`C. `tan^(-1)y-tan^(-1)x=c`D. `tan^(-1)y+tan^(-1)x=c` |
Answer» Correct Answer - C | |