Please answer 16th question

Dear student
Let I=exx2tan-1x+tan-1x+1x2+1dx=exx2tan-1x+extan-1x+exx2+1dxTake u=extan-1xdx=1extan-1x+exx2+1dudu=x2extan-1x+extan-1x+exx2+1dxSo,I=du=u+C=extan-1x+C
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