1/2+1/4+1/8+1/16+1/32+1/64
来源:学生作业帮 编辑:大师作文网作业帮 分类:数学作业 时间:2024/11/19 15:58:40
1/2+1/4+1/8+1/16+1/32+1/64
7/6+37/12+101/20+211/30+379/42
1/3+1/6+1/10+1/15+1/21+1/28+1/36+1/45
1/2+1+3/2+2+5/2+...+30
1+11/2+55/6+157/12+341/20+631/30+1051/42
3/2-5/6+7/12-9/20+11/30-13/42
7/6+37/12+101/20+211/30+379/42
1/3+1/6+1/10+1/15+1/21+1/28+1/36+1/45
1/2+1+3/2+2+5/2+...+30
1+11/2+55/6+157/12+341/20+631/30+1051/42
3/2-5/6+7/12-9/20+11/30-13/42
1/2+1/4+1/8+1/16+1/32+1/64
没简单是算法 通分,=63/64
7/6+37/12+101/20+211/30+379/42
=1+1/6+3+1/12+5+1/20+7+1/30+9+1/42
=1+3+5+7+9+(1/2-1/3)+(1/3-1/4)+(1/4-1/5)+.+(1/6-1/7)
=25+1/2-1/7
=25+5/14
1/3+1/6+1/10+1/15+1/21+1/28+1/36+1/45
=1/2+.
=3/5+...
=2/3+...
=15/21+.
=21/28+.
=28/36+.
=21/45=7/15
1/2+1+3/2+2+5/2+...+30
=(1+2+...+60)/2
=(1+60+2+59+3+58+30).../2
=(29*61+30)/2
=899.5
1+11/2+55/6+157/12+341/20+631/30+1051/42
=1+5+1/2+9+1/6+13+1/12+17+1/20+31+1/30+25+1/42(同第二题)
3/2-5/6+7/12-9/20+11/30-13/42
=3/2-(1/2+1/3)+(1/3+1/4)-(1/4+1/5)+(1/5+1/6)-(1/6+1/7)
=1+1/2-1/2-1/3+1/3+1/4-1/4-1/5+1/5+1/6-1/6-1/7
=1-1/7
=6/7
方法应该基本对,计算可能有失误,请自己仔细演算一下
没简单是算法 通分,=63/64
7/6+37/12+101/20+211/30+379/42
=1+1/6+3+1/12+5+1/20+7+1/30+9+1/42
=1+3+5+7+9+(1/2-1/3)+(1/3-1/4)+(1/4-1/5)+.+(1/6-1/7)
=25+1/2-1/7
=25+5/14
1/3+1/6+1/10+1/15+1/21+1/28+1/36+1/45
=1/2+.
=3/5+...
=2/3+...
=15/21+.
=21/28+.
=28/36+.
=21/45=7/15
1/2+1+3/2+2+5/2+...+30
=(1+2+...+60)/2
=(1+60+2+59+3+58+30).../2
=(29*61+30)/2
=899.5
1+11/2+55/6+157/12+341/20+631/30+1051/42
=1+5+1/2+9+1/6+13+1/12+17+1/20+31+1/30+25+1/42(同第二题)
3/2-5/6+7/12-9/20+11/30-13/42
=3/2-(1/2+1/3)+(1/3+1/4)-(1/4+1/5)+(1/5+1/6)-(1/6+1/7)
=1+1/2-1/2-1/3+1/3+1/4-1/4-1/5+1/5+1/6-1/6-1/7
=1-1/7
=6/7
方法应该基本对,计算可能有失误,请自己仔细演算一下
1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256
1/2-1/4-1/8-1/16-1/32-1/64-1/128-1/256
1/2-1/4-1/8-16/1-32/1-64/1-128/1-256/1
简便计算1/2+1/4+1/8+1/16+1/32+1/64+1/128
1/2+1/4+1/8+1/16+32/1+1/128没有1/64简算
1--1/2-1/4-1/8-1/16-1/32-1/64怎么简便计算
1-1/2-1/4-1/8-1/16-1/32-1/64简便计算
1/2+1/4+1/8+1/16+1/32+1/64+1/128
求和:1/2+1/4+1/8+1/16+1/32+1/64+.+1/1024=?
1/2+1/4+1/8+1/16+1/32+1/64+.+1/512
1-1/2-1/4-1/8-1/16-1/32-1/64
1-2/1-4/1-8/1-16/1-32/1-64/1=多少?