A. (x3+1)(y3+1)=c
B. (x3-1)(y3-1)=c
C. (x3-1)(y3+1)=c
D. (x3+1)(y3-1)=c
The solution of y2 dx+(3xy-1)dy=0 is
If y=(x<sup>2</sup>-1)<sup>n</sup>, then (x<sup>2</sup>-1)y<sub>n+2</sub>+2xy<sub>n+1</sub>=
The solution of excot y dx+(1-ex)cosec2ydy=0 is
The solution of (x+y+1) dy/dx=1 is
The solution of x cos(y/x)(y dx+x dy)=y sin y/x(x dy – y dx) is
A family of curves has the differential equation (xy)dy/dx = 2y2 - x2. Then the family of curves is
A= sin 780- sin 180+ cos 1320, B= cos 120+ cos 840+ cos 1320+ cos 1560 and C= (sin 750+sin 150)/ (sin 750+cos 150) then by arranging in the ascending order
The solution of extan y dx+(1-ex)sec2ydy=0 is
If the equation λx2 – 5xy + 6y2 + x -3y=0, represents a pair of straight lines, then their point of intersection is
If A and B are two square matrices such that B=A-1 BA, then (A+B)2 is equal to