(D³+4D²D¹+4DD¹^2)Z=0
1) (y - xz)p + (yz - x)q = (x + y)(x - y)
y dx-4(x+y6)dy=0
y''+y=senx
how to solve y'''+2y''+y'=10
solve the intergrating factt ;tdt+xdx=a2(tdx-xdx)/t^2+x^2
Find the partial differential equation by eliminating a and b from the equation z=ax+by+a²+b²
y = 2px + py^2
how to solve y''-y'-12y=e4x
dx/y+1 =dy/X+1=dz/z