szw52ts91l的部落格

標題:

有兩條math既問題

發問:

化簡 (ab^2)^7除(a^2b)^7 化簡 r^3n s^2n X (r除s^3)^n

最佳解答:

1) (ab^2)^7 / (a^2b)^7 = ( ab^2 / a^2b)^7 = ( b/a ) ^ 7 = b^7 / a^ 7 2) r^3n s^2n * ( r/s^3)^n = r^3n s^2n r^n / s^3n = r^4n / s^n 2010-10-03 20:10:33 補充： 002 : =r^3n s^2n 乘 r^n OVER s^3n =r^(3n+n) OVER s^(2n-3n) 呢步steps錯左. =r^3n s^2n 乘 r^n OVER s^3n = r^(3n+n) 乘 s^(2n-3n) = r^4n s^-n = r^4n / s^n or =r^3n s^2n 乘 r^n OVER s^3n = r^(3n+n) over s^( 3n-2n) = r^4n / s^n 003 : 你的答案與本人極度相似. 已檢舉

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(ab^2)^7除(a^2b)^7 a^7b^14/a^14b^7 b^7/a^7 _______________ r^3n s^2n X (r/s^3)^n r^3n s^2n X (r^n/s^3n) r^4n/s^n|||||1. (ab^2)^7 / (a^2b)^7 = ( ab^2 / a^2b)^7 = ( b/a ) ^ 7 = b^7 / a^ 7 2. r^3n s^2n * ( r/s^3)^n = r^3n s^2n r^n / s^3n = r^4n / s^n|||||(ab^2)^7除(a^2 b)^7 =a^7 b^14除a^14 b^7 =a^(7-14) b^(14-7) =a^-7 b^7 =b^7除a^7 r^3n s^2n X (r除s^3)^n =r^3n s^2n 乘 r^n OVER s^3n =r^(3n+n) OVER s^(2n-3n) =r^4n OVER s^-n =s^n OVER r^4n