神马作文网丨1-2009/1丨+丨2009/1-2010/1丨+丨2010/1-2011/1丨=?
来源：学生作业帮 编辑：神马作文网作业帮 分类：英语作业 时间：2024/11/15 23:17:26
丨1-2009/1丨+丨2009/1-2010/1丨+丨2010/1-2011/1丨=?
丨2/1-1丨+丨3/1-2/1丨+...+丨99/1-98/1丨+丨100/1-99/1丨=?
求大神解答!
丨2/1-1丨+丨3/1-2/1丨+...+丨99/1-98/1丨+丨100/1-99/1丨=?
求大神解答!
The absolute value is never a negative number; therefore,for the first above question we have
(2009/1-1)+(2010/1-2009/1)+(2011/1-2010/1)
=2010
The second one is quite similar to the first,i.e.
(2/1-1)+(3/1-2/1)+(4/1-3/1)+...+(99/1-98/1)+(100/1-99/1)
=1+1+1+...+1+1
=99
(2009/1-1)+(2010/1-2009/1)+(2011/1-2010/1)
=2010
The second one is quite similar to the first,i.e.
(2/1-1)+(3/1-2/1)+(4/1-3/1)+...+(99/1-98/1)+(100/1-99/1)
=1+1+1+...+1+1
=99
丨1/2009-1/2010丨+丨1/2010-1/2011丨+丨1/2011-1/2009丨
计算丨1/2008-1/2009丨+丨1/2009-1/2010丨+丨1/2010-1/2011丨
丨1/2013-1/2012丨+丨1/2012-1/2011丨+丨1/2011-1/2010丨
丨1/2011-1/1010丨-丨1/2012-1/2010丨+丨1/2012-1/2011
用简便方法计算丨1/3-1/2丨+丨1/4-1/3丨+丨1/5-1/4丨+...+丨1/2010-1/2009丨的值
丨－9丨＋丨+1丨= 丨－10丨－丨－8丨= 丨－4丨×丨6.2丨= 丨24丨÷丨－3丨×丨－2丨=
丨1/4-1/2丨+丨1/6-1/4丨+丨1/8-1/6丨+···+丨1/2012-1/2010丨
丨a+b丨-丨b-1丨-丨a-c丨-丨a-c丨=
2()------------------()丨 / 丨丨3 / 1 丨4丨 / 丨 ()---------------
丨1/3-1/2丨+丨1/4-1/3丨+丨1/5-1/4丨+.+丨1/10-1/9丨=?
绝对值化简：丨a+1丨-丨c-b丨+丨b-1丨
已知a/丨a丨+b/丨b丨+c/丨c丨=1,求丨abc丨/abc÷（bc/丨ab丨*ac/丨bc丨*ab/丨ac丨的值