xlogx+cx \log x+cxlogx+c
c+xxlogxc+x^{x} \log xc+xxlogx
log(xx+1)+c\log \left(x^{x}+1\right)+clog(xx+1)+c
xx+cx^{x}+cxx+c
(x+1)logx+c(x+1) \log x+c(x+1)logx+c