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数学
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(27/8)^-2/3+0.002^-1/2-10*((5^(1/2))-2)^-1+14/9
人气:186 ℃ 时间:2020-05-10 22:30:45
解答
-18
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(-27/8)-2/3 0.002-1/2-10(根号5-2)^-1 (根号2-根号3)^0
1+2+3-4+5+6+7-8+9+10+11-12+13+14+15-16.+25+26+27-28
7/9*5/6/14/27 1/2*2/5+9/10/9/20 5/8*1/4/5/8*1/4 (1/2+2/3+3/4)*36
数学归纳法证明2+3+4=1+8 5+6+7+8+9=8+27 10+11+12+13+14+15+16=27+64试猜想一般公式并证明
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36=
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