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1、点列中的通项公式问题求解策略(续)!"#$%&'(%)*!%)+!%)*!%)+%*!%+,%)*-%*.%+-%)+!,%*'/0/0+12340+4!%+'/020+12340+4!%)*'/0/$02+4&+4!%)+'/02$02+4&+4"%)+/%+'02+4/0+12340+4'*204/$04&+235014+!%)+/%*'02+420+12340+4'*2042$04&+235014+"6'04!4708(79!(.6-*!%)+/%+':*$6&'*26/6+1
2、236+!%)+/%*':+$6&'*2626+1236+":*$6&:+$6&6;<(!*&,:)*$6&'*+$*/62+6+1236&!(-6-*!:)*$6&-(!:*$6&<(!*&!:*$6&<(!*&=:+$6&<(!*&"!#$%*2>&#$%+2>&!>7:+$6&>-/:+$6&!:+$6&<(!*&:+$6
3、&-:+$*&'1?2@+!>$/A!/1?2@+BC<1?/@+!2A&=#$%*2>&#$%+2>&!/:*$6&->-:*$6&!:*$6&<(!*&:*$6&7:*$*&'1?/@+!></1?/@+!1?/@+B=#$%*2>&#$%+2>&!>7:*$6&>-/:*$6&!:*$6&<(!*&:*$6&
4、;.:*$(&'*!>$/A!/*&C$*!2A&=#$%*2>&#$%+2>&!/:+$6&->-:+$6&!:+$6&<(!*&:+$6&8:+$(&'*!>$/*!*&=#$%*2>&#$%+2>&!!:*$6&->-:+$6&/:+$6&->-/:*$6&!:*$6&:+$6&<(!*&:+$
5、6&8*!:*$6&.*!>"$&$*(+3DD&EF4GH4G2*'I4JG$I!J!IK(!J;LJ8+&!F4GH"E@!M*4*$(-4*-4&"N,O'%+MG$G;LP&%!Q,O'4%RG2*!RG2*O!NMG2*!M*!M+!S!MG!ST(?T+((U*+!"#$%&'$($)*+,-./0123'$(#$3#2$,&'$4$56137./0#14$5634$56(6#8#2$3#2$,&4$56'$56/3-./012'$5
6、63'$56(6#8#2$36#28#9$,&'$56#$5606#8#2$&#$06#8#2$:606#(6#8#2$:2,20(6#,652#22$:20(6#,652(6#8#2$:;,220(6#,652522#2;$:;0<0(6#,6525225<52$:2#2$:660(6#,2$:6:6#2$:663#$0#8(#6#,2$:6&#$5606#8#2$3"#$%#$0#8(#6#,2$:6&="1$%31631231;3193"1$%3&"/$%&>
7、=>3?$(1$3@,34$(1$32$:6,-$./0125#$15A$($)*+,3#$0:2:9$:62$:631$.1606342(1232,-6./0125#615A63?6(163@,42?6-63<<34$56(1$5632$,-$./0125#$15A$($)*+,3?$(1$3@,4$56?$-$3"1$%&4(13/,-$3B?$4B0(1:1$,25/C20(1:1$,25(125#$15A$,C2&D(1,0(1:1$,25(125#$15A$,23DE(1,02(1:1$
8、,52(125#$15A$,(215#$,&?$(1$3@,4$56(1$5632$,?$-$3DE(1$56,0@32(1$56:1$,52(12$565#$1$565A$,(21$565#$,0@&4$56(1$5632$,-$