7.1 Integration By Parts/14

$\int s2^{s}ds=s*{\frac {2^{s}}{ln(2)}}-\int {\frac {2^{s}}{ln(2)}}ds=s*{\frac {2^{s}}{ln(2)}}-{\frac {1}{ln(2)}}*\int 2^{s}ds=s*{\frac {2^{s}}{ln(2)}}-{\frac {1}{ln(2)}}={\frac {s*2^{s}}{ln(2)}}-{\frac {2^{s}}{ln(2)^{2}}}$