作业帮一道高数二重积分题3∫（0,π/3) 1/[7+cos(2x-π/3)]dx 书上答案给的是√3/2 * arctan1/2
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![一道高数二重积分题3∫（0,π/3) 1/[7+cos(2x-π/3)]dx 书上答案给的是√3/2 * arctan1/2](/uploads/image/z/2792007-63-7.jpg?t=%E4%B8%80%E9%81%93%E9%AB%98%E6%95%B0%E4%BA%8C%E9%87%8D%E7%A7%AF%E5%88%86%E9%A2%983%E2%88%AB%EF%BC%880%2C%CF%80%2F3%29+1%2F%5B7%2Bcos%282x-%CF%80%2F3%29%5Ddx+%E4%B9%A6%E4%B8%8A%E7%AD%94%E6%A1%88%E7%BB%99%E7%9A%84%E6%98%AF%E2%88%9A3%2F2+%2A+arctan1%2F2)
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一道高数二重积分题3∫（0,π/3) 1/[7+cos(2x-π/3)]dx 书上答案给的是√3/2 * arctan1/2
一道高数二重积分题
3∫（0,π/3) 1/[7+cos(2x-π/3)]dx 书上答案给的是√3/2 * arctan1/2
一道高数二重积分题3∫（0,π/3) 1/[7+cos(2x-π/3)]dx 书上答案给的是√3/2 * arctan1/2