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標題: [問題] math -- simplify with +ve indices [打印本頁]

作者: 16479 時間: 2014-7-14 01:05 PM 標題: math -- simplify with +ve indices

1 prove that (-2)^(m) · (-2)^(m+1) / [2^(m-1)]^(2) = -8

2 prove that [x^(2) + y^(2)]^(-1) / [x^(-2) + y^(-2)]^(-1) = 1/[x^(2) · y^2(2)]

step by step 5 goi, no fly steps thx

[ 本帖最後由 16479 於 2014-7-20 07:37 PM 編輯 ]

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