InterviewSolution
Saved Bookmarks
| 1. |
यदि (If) `y=sqrt((1-x)/(1+x))`, सिद्ध करें कि (prove that) `(1-x^(2))(dy)/(dx)+y=0` |
|
Answer» `y=sqrt((1-x)/(1+x))=((1-x)/(1+x))^(1//2)` `rArrlogy=(1)/(2)[log(1-x)-log(1+x)]` ...(1) x के सापेक्ष अवकलन करने पर , हमें मिलता है `(1)/(y)(dy)/(dx)=(1)/(2)[(-1)/(1-x)-(1)/(1+x)]rArr(1)/(y)(dy)/(dx)+(1)/(2)*((2)/(1-x^(2)))=0` अतः `(1-x^(2))(dy)/(dx)+y=0` |
|