関連ワード:  what is the integral of x^4    what is the integral of x 4    what is the integral of 4 x 2    integral of 4e^x    what is the integral of 4 x 3    what is the antiderivative of x 4    what is the antiderivative of x 4 5    what is the antiderivative of x 4 3    what is the integral of 1 x 4    what is the integral of e x 4