∫(0,3/4π)√(1+cos2x)dx定积分答案是多少
问题描述:
∫(0,3/4π)√(1+cos2x)dx定积分答案是多少
答
√2∫(0,3/4π)IcosxIdx=√2[∫(0,1/2π)cosxdx-∫(1/2π,3/4π)cosxdx]=2√2-1
∫(0,3/4π)√(1+cos2x)dx定积分答案是多少
√2∫(0,3/4π)IcosxIdx=√2[∫(0,1/2π)cosxdx-∫(1/2π,3/4π)cosxdx]=2√2-1