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96科園實小22.27.28.31.32.35
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96科園實小22.27.28.31.32.35
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- 96年國立科工實中教師甄選各科試題(含國中小)國小數學.doc
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Re: 96科園實小22.27.28.31.32.35
第 1 題
http://forum.nta.org.tw/examservice/sho ... hp?t=23067
第 2 題
分母 = (1254 + 1246)(1254 - 1246) = 2500 * 8
......
第 3 題
1/2 = 1/(1 * 2) = 1 - (1/2)
1/(2 + 4) = 1/(2 * 3) = (1/2) - (1/3)
1/ (2 + 4 + 6) = 1/(3 * 4) = (1/3) - (1/4)
:
:
:
1/(2 + 4 + ... + 100) = 1/(50 * 51) = (1/50) - (1/51)
所求 = 1 - 1/51 = 50/51
http://forum.nta.org.tw/examservice/sho ... hp?t=23067
第 2 題
分母 = (1254 + 1246)(1254 - 1246) = 2500 * 8
......
第 3 題
1/2 = 1/(1 * 2) = 1 - (1/2)
1/(2 + 4) = 1/(2 * 3) = (1/2) - (1/3)
1/ (2 + 4 + 6) = 1/(3 * 4) = (1/3) - (1/4)
:
:
:
1/(2 + 4 + ... + 100) = 1/(50 * 51) = (1/50) - (1/51)
所求 = 1 - 1/51 = 50/51