5 x -3*x *2
(-3*x^5)*2^x
x 4 x 5 - 15*2 *x - 3*2 *x *log(2)
x 3 / 2 2 \ -3*2 *x *\20 + x *log (2) + 10*x*log(2)/
x 2 / 3 3 2 2 \ -3*2 *x *\60 + x *log (2) + 15*x *log (2) + 60*x*log(2)/