InterviewSolution
Saved Bookmarks
| 1. |
Solution of the differential equation `x((dy)/(dx))^(2)+2sqrt(xy)(dy)/(dx)+y=0`,isA. `x+y=a`B. `sqrtx-sqrty=a`C. `x^(2)+y^(2)=a^(2)`D. `sqrtx+sqrty=sqrta` |
|
Answer» Correct Answer - D We have, `x((dy)/(dx))^(2)+2sqrt(xy)(dy)/(dx)+y=0` `rArr" "(sqrtx(dy)/(dx)+sqrty)^(2)=0` `rArr" "sqrtx(dy)/(dx)+dqrty=0` `rArr" "(1)/(sqrtx)dx+(1)/(sqrty)dy=0` `2sqrtx+2sqrty=C rArr sqrtx+sqrty=sqrta, " where "sqrta=2C`. |
|