数列😖!万分感谢🙏🙏

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/25 02:52:17
数列😖!万分感谢🙏🙏
xݔNA_e@@ܝVUͮ`L|G-]x_dV\] ~  No{7mp}y [!!$[e=A W9Qk4tmDGp)$Lxx4 '1ECAPB#UbQX F(cN1e-Ba$jskJU󵆆ZAJR4P"HuEӐ2XNҥt7Bgh="x8,M0FG*@l2zjP 1JTDp$ РhK++ "D\qctp*8C,T#ȉ-R.:D% АeZ^W 8vD!ą3̂bt>œ rHʤ`dDФv{V{^ ^_9H>)e9 󫕉dž,Wo_gl`,[|,ϟQwbݥ=vG)[NܢKoe,mm41&2[M7-P

数列😖!万分感谢🙏🙏
数列😖!万分感谢🙏🙏
 

数列😖!万分感谢🙏🙏

收起

An+1=2An+(5-3)·5^n
An+1 - 5^(n+1) = 2 (An-5^n)
令Bn=An-5^n,B1=1
Bn+1 = 2Bn
Bn=B1* 2^(n-1) =2^(n-1)
An=Bn +5^n =2^(n-1)+5^n