関連ワード:  what is the integral of xsinx 2    what is the integration of e 2x * sin x    what is the integration of 2 sin x    what is the integration of 2 sin x cos x    what is the integral of sin 2 x dx    what is the integral of x 2 sinx dx    what is the integral of 2x    what is the integral of 2    what is the integral of x^-2