ʱ : ڶ 2019年上海松江区高考数学一模试卷及答案 - 百度文库ϿʼĶ
ԣsinA= = x14ٷ֣֪0aR18 1ۺfxżԣ˵ɣ
2a0ʱоfxxʣ0+ޣڵĵԣ 𡿽⣺1a=0ʱfx=1x0 fx=fx ʱfxΪż
a0ʱfa=0fa=2 fx=fxҲfx=fx ʱfxΪż 2a0ʱ Ϊxʣ0a Ϊ+xʣaޣ
fxڣ0aΪڣa+ޣΪ 1914֣ɽй糵ĿݱĽУͨд ֪ij·ͨ糵ķʱtλӣ2t20гв㣬糵ؿ뷢ʱtأ10t20ʱ糵Ϊ״̬ؿΪ400ˣ2t10ʱؿ٣ٵ루10tƽȣҷʱΪ2ʱؿΪ272ˣǵ糵ؿΪpt
1ptıʽʱΪ6ʱ糵ؿ
·ÿӵľΪԪʵʱΪ2ʱ·ÿ
ӵľ
tk=Ϊ𡿽⣺1֪p
2
k102k=2=272=400p2
p=t
2
610=3686p=4002
ɵã2
Q= 12t+ʱt10Q=1802
ʱȺųҽt=5
ܩ60+90=30t=102010tʱQ=60ʱȺų+
൱ʱΪ5ʱ·ÿӵľΪ60Ԫ
㣬Ϊb0E=1a2016֣֪ԲFֱlԲAB㣬yڵM
1ԲEķ̣
ΪACBDDClF2봹ֱֱ߽Բڡ㣬ıΣ ֱlķ̣
֤3+Ϊֵ 21
2222
ɵãc=a=b=b𡿽⣺ +3c+1
22
=4abԲ̣=1ã
ķ̣ԲE
+AxyBxyCxyDx2ֱly=kx1010212
y 1
2222
ã1+4kxx+ 4=0+12k8k
=xx=xx+ 2121 бΪkת=|AB|ֱCD= =|ɩͬ|CD
==CD|ACBDS=|AB||ı
2242 k=k=5k+2=0ãk=2k=2k k=k=kɣ0
xֱABķΪy+=0xy+=0
x=ˣx=xãxࣨ3221112 ˣ== 21
+==+˩21 ==8 +ΪֵֵΪ8 21 *|aa|=n1}mm2mN1821֣֪{an1nn+*Nm1nnܡ
1m=5a=1a=3дһ{a} n512m=64a=2֤{a}ΪеijҪa=2018 641n3a=0aпܵȡֵжٸ˵ɣ m1*|aa|2mN=n1𡿽⣺1{a}mmn1nn+*Nnʡnm1
m=5a=1a=3 51{a}У1247310213 n֤2Ҫ {a}ΪУã naa=1aa=2aa=63 63641232 ==2016aa 164=2a=2018a 641
*Nn63n1|aa|=n n1n+63aaaaa1a2 63136422a2018aa2016 64641a=2018 64*N=naa1n63n n1n+У}{a na}aϣ{ΪеijҪ=2018 64n ⣺3aa=1aa=2aa=m1 1213mm2*1im1i}iNУa=b+b+b++bb{i im2m3111=12a minmȡֵak
*+a+=a n++
=m
maxmmaпֵ
루aIJΪż maxmm ֮ȡ2ѧɷ֤a nɣ*ֻ֪123m1ȡһӣԵõ2 ֵɣ1 m=2ʱ
m=3ʱ12ȡһӣԵõ123ȡһӣԵõ13۳ *۳N3kڼm=kk
11ȡһӣԵõ23k1ֵ
ȡһӣ1k23m=k+1ʱɼ裬1 еkk1kȡ123ֵÿԵõ1 ɵ2kk1еġ2kȡ13 ȫӣɵk1k321
=пܵȡֵУa m