2017年广东省深圳市高考数学一模试?文科)含答案解?- 百度文库

û1·ݵõãYķֲкѧ

2012֣ѳԲC϶ľΪ

+=1ab0ΪҶ

P02ֱlԲCཻAB㣮

1ԲCķ̣

2MABе㣬QΪ0QMABʱֱlķ̣

2112֣֪fx=ax+1lnxax+3aRgxfxĵeΪȻĵ 1gxĵԣ

2aeʱ֤gea0

3aeʱжϺfxĸ˵ɣ

[ѡ4-4ϵ]

2210ֱ֣ϵxOyУEIJΪԭOΪ㣬xΪὨϵ 1дE̺ͨͼ귽̣

B㣬2ֱlEཻڵAOAOB֤Ϊֵֵ

[ѡ4-5ʽѡ]

23֪fx=|x+a|gx=|x+3|x 1a=1ⲻʽfxgx

2x[11]fxgxaȡֵΧ

2017㶫ʡи߿ѧһģԾĿƣ

ο

һѡ⣺⹲12С⣬ÿС5֣60.ÿСĸѡУֻһǷĿҪ.

1A={2468}B={x|x29x+180}AB= A{24} B{46} C{68} D{28} 㡿㣮

BвʽĽ⼯ȷBҳABĽɣ

𡿽⣺A={2468}B={x|x29x+180}={x|x3x60}={x|3x6} AB={46} ѡB

⿼˽㣬սĶǽⱾĹؼ 2

aRΪiΪλa=

D3

A3 B2 C2

㡿ʽij˳㣮

ɸʽij˳㻯Ϊг飬⼴ɵô𰸣 𡿽⣺߸

=

=

ָݸ

aR

aRΪ

ãa=2 ѡB

⿼˸ʽij˳㣬˸Ļǻ⣮

3װдСͬĸĸϷֱ֡2346

ѡȡѡϵܹɵȲеĸǣ

A B C D

㡿ŵͼʼ㹫ʽ

ִѡȡ򣬻¼n=

=4ѡϵ

ܹɵȲаĻ¼ĸɴѡϵܹɵȲеĸʣ

34𡿽⣺װдСͬĸĸϷֱ֡26

ִѡȡ ¼n=

=4

ѡϵܹɵȲаĻ¼У 2342462

ѡϵܹɵȲеĸp== ѡC

⿼ʵ󷨼Ӧãǻ⣬ʱҪ⣬עȿ¼ʼ㹫ʽĺã

4a=0.23b=log0.30.2c=log30.2abcСϵȷǣ Aabc Bbac Cbca Dcba 㡿ֵСıȽϣ

ָĵԼɵó

𡿽⣺a=0.23=0.008b=log0.30.2log0.30.3=1c=log30.21 bac ѡB

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