因为a1+a2+a3=32,a11+a12+a13=118;
所以a1+a2+a3+a11+a12+a13=150;
又因为a4+a10=a1+a13=a2+a12=a3+a11;
所以a4+a10=50,明白了吗?
谢谢)在等差数列{an}中,若a1+a2+a3=32,a11+a12+a13=118,则a4=a10等于?
谢谢)在等差数列{an}中,若a1+a2+a3=32,a11+a12+a13=118,则a4=a10等于?
数学人气:776 ℃时间:2020-04-03 03:32:05
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