" 31."x cos^(2)ydx-y cos^(2)xdy=0

xcos^(2)ydx-ycos^(2)xdy=0

Solve the following differential equation: x cos^(2)ydx=y cos^(2)xdy

General solution of coty cos^(2)xdy+cotxcos^(2)ydx=0 is

Solve the following differential equations : tan x cdotcos^2ydx+tan ycdot cos^2xdy=0

Let y=f(x) is solution of differential equation cos^(2)xdy-cos^(4)xdx=(tan2x)ydx,|x|le(pi)/(4) and f((-pi)/(6))=(-3sqrt(3))/(8), then

ydy+xe^(x)cos^(2)ydx=0

y log ydx-xdy=0

The general solution of the differential equation x. cos(y/x)(ydx+xdy)=y sin(y/x)(xdy-ydx) is

x(ydx+xdy)cos(xy)+sin(xy)dx=0

x(ydx+xdy)cos(xy)+sin(xy)dx=0