Integrating factor of 
is:
Given differential equation
Divide throughout by x
Compare 
with 
we get 
and Q = x3 – 3
The IF integrating factor is given by e∫Pdx
⇒ e∫Pdx = e-logx
Hence IF integrating factor is 
43
Integrating factor of is:
Given differential equation
Divide throughout by x
Compare with we get and Q = x3 – 3
The IF integrating factor is given by e∫Pdx
⇒ e∫Pdx = e-logx
Hence IF integrating factor is