1.

The integrating factor of `(xdy)/(dx)-y=x^(4)-3x "is"`A. xB. log xC. `(1)/(x)`D. `-x`

Answer» Given that `x(dy)/(dx)-y=x^(4)-3x`
`Rightarrow (dy)/(dx)-(y)/(x)=x^(3)-3`
`"Here" P=-(1)/(x),Q=x^(3)-3`
`IF=e^(intPdx)=e^(int(1)/(x)dx)=e^(-log x)` `=(1)/(x)`


Discussion

No Comment Found

Related InterviewSolutions