

InterviewSolution
Saved Bookmarks
1. |
The general solution of the differential equation `(ydx-xdy)/(y)=0` is :A. `xy=C`B. `x=Cy^(2)`C. `y=Cx`D. `y=Cx^(2)` |
Answer» Given differential equation is `(ydx-xdy)/(y)=0` `implies ydx-xdy=0 implies (1)/(x)dx-(1)/(y)dy=0` On integration, `log|x|-log|y|=logk` `implies log|(x)/(y)|=logkimplies(x)/(y)=k` ` y=(1)/k)ximpliesy=Cx` (Let `(1)/(k)=C`) |
|