Order of (3x+2y)(dydx)2+5xd2ydx2=0 is:
The differential equation of family of curves y2=4a(x+a) is a) y2=4dydx(x+dydx) b) 2ydydx=4a c) yd2ydx2+(dydx)2=0 d) 2xdydx+y(dydx)2−y=0