3∧n-3∧(n+1)怎么化简?
问题描述：
3∧n-3∧(n+1)怎么化简?
答
3^n-3^(n+1)
=3^n-3^n*3
=3^n*(1-3)
=-2*3^n
3∧n-3∧(n+1)怎么化简?
3^n-3^(n+1)
=3^n-3^n*3
=3^n*(1-3)
=-2*3^n