观察下列各个等式:1/√2+1=√2-1,1/√3+√2=√3-√2,1/√4+√3=√4-√3,··· ,
问题描述:
观察下列各个等式:1/√2+1=√2-1,1/√3+√2=√3-√2,1/√4+√3=√4-√3,··· ,
从上述等式中找出规律并用这一规律计算:
(1/√2+1+1/√3+√2+1/√4+√3+···+1/√2004+√2003)(√2004+1)
答
=(√2-1+√3-√2+√4-√3+.√2004-√2003)(√2004+1)
=(√2004-1)(√2004+1)
=2004-1
=2003