$\int x \ln x d x=$ কত ?

$\frac{x^{2}}{2} \ln x-\frac{x^{2}}{4}+c$

$x^{2} \ln x-\frac{x^{2}}{4}+c$

$\frac{x^{2}}{2} \ln x+\frac{x^{2}}{4}+c$

$\text { none }$