ab互为相反数,则a+2a+.+100a+100b+99b+98b+...b

问题描述:

ab互为相反数,则a+2a+.+100a+100b+99b+98b+...b

ab互为相反数
a+b=0
a+2a+.+100a+100b+99b+98b+...b
=5050a+5050b
=5050(a+b)
=5050x0
=0