规定x@y=x*(x+1)*(x+2)*…*(x+y-1),如2@4=2*3*4*5.已知n+1/n@3=1/575,求
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规定x@y=x*(x+1)*(x+2)*…*(x+y-1),如2@4=2*3*4*5.已知n+1/n@3=1/575,求自然数n
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![规定x@y=x*(x+1)*(x+2)*…*(x+y-1),如2@4=2*3*4*5.已知n+1/n@3=1/575,求](/uploads/image/z/20122886-38-6.jpg?t=%E8%A7%84%E5%AE%9Ax%40y%3Dx%2A%28x%2B1%29%2A%28x%2B2%29%2A%E2%80%A6%2A%28x%2By-1%29%2C%E5%A6%822%404%3D2%2A3%2A4%2A5.%E5%B7%B2%E7%9F%A5n%2B1%2Fn%403%3D1%2F575%2C%E6%B1%82)
n@3=n(n+1)(n+2)
n+1/n@3=1/575
1/n(n+2)=1/575
n^2+2n-575=0
n=23
n+1/n@3=1/575
1/n(n+2)=1/575
n^2+2n-575=0
n=23
规定x@y=x*(x+1)*(x+2)*...*(x+y-1),如2@4=2*3*4*5.已知n+1/n@3=1/575
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