作业帮设a=3/2,b=27/2,求值：[（a^1/2+b^1/2）^-1-(a^1/2-b^1/2)^-1]/[（a^1/2+b^1/2）^-1+(a^1/2-b^1/2)^-1]
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![设a=3/2,b=27/2,求值：[（a^1/2+b^1/2）^-1-(a^1/2-b^1/2)^-1]/[（a^1/2+b^1/2）^-1+(a^1/2-b^1/2)^-1]](/uploads/image/z/14829281-17-1.jpg?t=%E8%AE%BEa%3D3%2F2%2Cb%3D27%2F2%2C%E6%B1%82%E5%80%BC%EF%BC%9A%5B%EF%BC%88a%5E1%2F2%2Bb%5E1%2F2%EF%BC%89%5E-1-%28a%5E1%2F2-b%5E1%2F2%29%5E-1%5D%2F%5B%EF%BC%88a%5E1%2F2%2Bb%5E1%2F2%EF%BC%89%5E-1%2B%28a%5E1%2F2-b%5E1%2F2%29%5E-1%5D)
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设a=3/2,b=27/2,求值：[（a^1/2+b^1/2）^-1-(a^1/2-b^1/2)^-1]/[（a^1/2+b^1/2）^-1+(a^1/2-b^1/2)^-1]
设a=3/2,b=27/2,求值：[（a^1/2+b^1/2）^-1-(a^1/2-b^1/2)^-1]/[（a^1/2+b^1/2）^-1+(a^1/2-b^1/2)^-1]
设a=3/2,b=27/2,求值：[（a^1/2+b^1/2）^-1-(a^1/2-b^1/2)^-1]/[（a^1/2+b^1/2）^-1+(a^1/2-b^1/2)^-1]
百度回答不能编辑公式,我在Word中做了一个,然后剪切出来,你看看吧.