计算:(2²+4²+……+100²)-(1²+3²+……+99²)

来源:学生作业帮助网 编辑:作业帮 时间:2024/08/30 20:00:49
计算:(2²+4²+……+100²)-(1²+3²+……+99²)
x){nuӭ4Ԕ -Me@mh`0J*I*ҧv6p% ՠ5U.b1@MӀۨiP 46ChF 1b6`%P!$z

计算:(2²+4²+……+100²)-(1²+3²+……+99²)
计算:(2²+4²+……+100²)-(1²+3²+……+99²)

计算:(2²+4²+……+100²)-(1²+3²+……+99²)
(2²+4²+……+100²)-(1²+3²+……+99²)
=(2²-1²)+(4²-3²)+(6²-5²)+……+(100²-99²)
=(1+2)+(3+4)+(5+6)+……+(99+100)
=5050

(2²+4²+……+100²)-(1²+3²+……+99²)
=(2²-1²)+(4²-3²)+(6²-5²)+……+(100²-99²)
=(1+2)+(3+4)+(5+6)+……+(99+100)
=(1+100)*100/2
=5050