1/2000*2001+1/2001*2002+1/2002*2003+1/2003如何简便计算*为乘以
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![1/2000*2001+1/2001*2002+1/2002*2003+1/2003如何简便计算*为乘以](/uploads/image/z/99308-20-8.jpg?t=1%2F2000%2A2001%2B1%2F2001%2A2002%2B1%2F2002%2A2003%2B1%2F2003%E5%A6%82%E4%BD%95%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97%2A%E4%B8%BA%E4%B9%98%E4%BB%A5)
1/2000*2001+1/2001*2002+1/2002*2003+1/2003如何简便计算*为乘以
1/2000*2001+1/2001*2002+1/2002*2003+1/2003
如何简便计算
*为乘以
1/2000*2001+1/2001*2002+1/2002*2003+1/2003如何简便计算*为乘以
1/2000*2001+1/2001*2002+1/2002*2003+1/2003
=1/2000*2001+1/2001*2002+1/2003(1/2002+1)
=1/2000*2001+1/2001*2002+1/2002
=1/2000*2001+1/2002(1/2001+1)
=1/2000*2001+1/2001
=1/2000
2002*2001-2001*2000+2000*1999-.-3*2+2*1
1又1/2001+2又2/2001+3又3/2001+4又4/2001+.+2000又2000/2001
计算1001-1/2001-2/2001-3/2001-...-2001/2001
2001/1+2002/2+2001/3+2001/4+.+2001/2001
(-1/2)^2001+(1/2)^2000
(-1/2)^2001+(1/2)^2000=
计算:(-1/2)^2001+((1/2)^2000
(1*1+2*2)/(1*2)+(2*2+3*3)/(2*3)+……+(2000*2000+2001*2001)/(2000*2001)
1+2+3+...+1999+2000+2001+2002
1+2+3.+1999+2000+2001+2002
1+2+3+4+.+1999+2000+2001
1+2+3+.2000+2001=
1/2001+2/2001+3/2001...+4000/2001+4001/2001
(1-1/2001)+(1-2/2001)+(1-3/2001)+······+(1-1999/2001)+(1-2000/2001)
1999 2000/2001*1 2/19991999又2001分之2000乘1又1999分之2
(1^2+2^2)/1*2+(2^2+3^2)/2*3+...+(2000^2+2001^2)/2000*2001+(2001^2+2002^2)/2001*2002
|1/2002-1/2001|+|1/2001-1/2000|+...+|1/2-1|
(1/2+1/3+.+1/2000+1/2001)-(1+1/2+1/3+..+1/2001)(1/2+1/3+...+1/2000)1/2000+1/2001)-(1+1/2+1/3+..+1/2001)(1/2+1/3+...+1/2000)