求证:∫(0至π) x f(sinx)dx = π/2∫(0至π)f(sinx)dx

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求证:∫(0至π)xf(sinx)dx=π/2∫(0至π)f(sinx)dx求证:∫(0至π)xf(sinx)dx=π/2∫(0至π)f(sinx)dx求证:∫(0至π)xf(sinx)dx=π/2∫

求证:∫(0至π) x f(sinx)dx = π/2∫(0至π)f(sinx)dx
求证:∫(0至π) x f(sinx)dx = π/2∫(0至π)f(sinx)dx

求证:∫(0至π) x f(sinx)dx = π/2∫(0至π)f(sinx)dx
是不是这个?