求不定積分∫(sin2x -e^x/3)dx

求不定積分∫(sin2x -e^x/3)dx

∫[sin2x -e^(x/3)] dx
=∫sin2xdx-∫e^(x/3)dx
=1/2∫sin2xd2x-3∫e^(x/3)d(x/3)
=-1/2cos2x-3e^(x/3)+c