

InterviewSolution
Saved Bookmarks
1. |
For `y gt 0 and x in R, ydx + y^(2)dy = xdy` where y = f(x). If f(1)=1, then the value of f(-3) isA. 1B. 2C. 3D. 4 |
Answer» Correct Answer - C `(x dy-y dx)/(y^(2))=dy` `rArr" "-int d((x)/(y))=int dy` `rArr" "-(x)/(y)=y+c` At `x = 1, y = 1" "therefore" "c = -2` At `x = -3, (3)/(y)=y-2` `rArr" "y^(2)-2y - 3 = 0` `rArr" "y = 3` |
|