2x⋅x2x−1 \mathrm { 2 x \cdot x^{2 x-1}}2x⋅x2x−1
x2x+12x+1 \mathrm { \dfrac{x^{2 x+1}}{2 x+1}}2x+1x2x+1
xx(1+ln2x) \mathrm { x^{x}(1+\ln 2 x)}xx(1+ln2x)
x2x(2+2lnx) \mathrm { x^{2 x}(2+2 \ln x)}x2x(2+2lnx)