∫ (1+cos^2 x)/cos^2 x dx = 我的算法:∫ (1+cos^2 x)/cos^2 x dx = 1/cos^2 x + 1 = 2/(cos2x +1 ) + 1 = 2(cos2x+1)^-1 +1=这么变成了 2(cos2x+1)^0/(0) 不对啊 ==
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![∫ (1+cos^2 x)/cos^2 x dx = 我的算法:∫ (1+cos^2 x)/cos^2 x dx = 1/cos^2 x + 1 = 2/(cos2x +1 ) + 1 = 2(cos2x+1)^-1 +1=这么变成了 2(cos2x+1)^0/(0) 不对啊 ==](/uploads/image/z/5387353-25-3.jpg?t=%E2%88%AB+%281%2Bcos%5E2+x%29%2Fcos%5E2+x+dx+%3D+%E6%88%91%E7%9A%84%E7%AE%97%E6%B3%95%EF%BC%9A%E2%88%AB+%281%2Bcos%5E2+x%29%2Fcos%5E2+x+dx+%3D+1%2Fcos%5E2+x+%2B+1+%3D+2%2F%28cos2x+%2B1+%29+%2B+1+%3D+2%EF%BC%88cos2x%2B1%29%5E-1+%2B1%3D%E8%BF%99%E4%B9%88%E5%8F%98%E6%88%90%E4%BA%86+2%28cos2x%2B1%29%5E0%2F%280%29+%E4%B8%8D%E5%AF%B9%E5%95%8A+%3D%3D)
∫ (1+cos^2 x)/cos^2 x dx = 我的算法:∫ (1+cos^2 x)/cos^2 x dx = 1/cos^2 x + 1 = 2/(cos2x +1 ) + 1 = 2(cos2x+1)^-1 +1=这么变成了 2(cos2x+1)^0/(0) 不对啊 ==
∫ (1+cos^2 x)/cos^2 x dx =
我的算法:∫ (1+cos^2 x)/cos^2 x dx = 1/cos^2 x + 1 = 2/(cos2x +1 ) + 1 = 2(cos2x+1)^-1 +1=这么变成了 2(cos2x+1)^0/(0) 不对啊 ==
∫ (1+cos^2 x)/cos^2 x dx = 我的算法:∫ (1+cos^2 x)/cos^2 x dx = 1/cos^2 x + 1 = 2/(cos2x +1 ) + 1 = 2(cos2x+1)^-1 +1=这么变成了 2(cos2x+1)^0/(0) 不对啊 ==
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