计算:(2²+4²+……+100²)-(1²+3²+……+99²)
来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/22 17:37:58
计算:(2²+4²+……+100²)-(1²+3²+……+99²)计算:(2²+4²+……+100²)-(1&
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