• 2021-04-14
    【简答题】请问各位数学天才关于∫(arcsinx)²dx=?的这两种做法都正确吗令t=arcsinx,则x=sint,dx=costdt∫(arcsinx)²dx=∫t²·costdt=t²·sint-∫2t·sintdt=t²·sint+∫2t·d(cost)=t²·sint+2tcost-∫2costdt=t²·sint+2tcost-2sint+C=x·arcsin²x+2arcsinx·√