A. ex+y=c(y+1)(ex+1)
B. ex+y=c(y+1)(ex-1)
C. ex+y=c(y-1)(ex+1)
D. ex+y=c(y-1)(ex-1)
The curve represented by X= 2( cos t + sin t ), y=( cos t - sin t ) is
The solution of ex-y dx+ey-x dy=0 is