2021年四川省绵阳市某中学高考数学适应性试卷（文科）（二）（附答案详解）

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2021
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16@AẠ⚪.14.ூEᫀ௃AூH᪆௃ூᑖ᪆௃2⚪⌕ὃ5ᦪV^ᢣᦪVḄᜧ@AẠ⚪.2⚪j᪷ḄᦪV^ᢣᦪV^᦮ᦪ1ஹ2uᓽjf.ூHE௃Hᵫ⚪¡j¢a—log7>log4=2,221=log32ab=16,¯°Q=b=2/_L±•.CḄᯖ³Ḅᨬnc2x4=8,ᦑ⌱B.

1716.ூEᫀ௃AூH᪆·Hᵫ¸ᱥ,Ḅº»j¢PF=d+l,ᡠd+PQ=PF+PQ-l,ÃcPF+PQ>QFᡠPஹFஹQN¨ᐳ,PF+PQ_ᨬncQFÃcQF=J(-3—+(3-0)2=5.ᡠd+PQḄᨬnc5-1=4.ᦑ⌱A.ᵫ¸ᱥ,Ḅº»j¢PF=d+1,ᑣd+PQ=PF+PQ—1,᪷PF+PQNQÏj¢PஹÏஹ஺N¨ᐳ,PF+PQ_ᨬnc஺ÏÐÑj§ᨬn.2⚪⌕ὃ5K¸ᱥ,ḄÒᓫឋ[.H2⚪Ḅᐵ6᪷¸ᱥ,Ḅº»Ôᡠ§Ḅd+PQÕᓄcPF+PQ—1,ᯠy᪷PF+PQNQFu§H6;᫏⚪.17.ூEᫀ௃CூH᪆௃ூᑖ᪆௃2⚪ὃ5KÙᦪḄÚTÛᑣஹᓫÜឋ^᩽nḄᐵÝLAẠ¢7^gÛὃ5KᑖÞßàḄáâgÛLA2gÛ.@;᫏⚪.ᑭᵨÙᦪḄÚTÛᑣf/'(x)ᑖA>0^AWOßàᑡf⊤éᓽjf.ூHE௃Hf'(x)=■3x2+2ax+b.পë=4a2—12b>0f'(x)=0ᨵH,ð`cñ(3ᑡ⊤᝞óX(r8/1)X101*2)%2(᝞+8)f'M+0—0+f(x)ᓫÜ⌴#᩽ᜧnᓫÜ⌴ø᩽nᓫÜ⌴#ᵫ⊤éj¢জú6ûᦪ/(x)Ḅ᩽n¨6f஺)ᙠý(-8,þ)ᐹᨵᓫឋᦑC;18⚓ᐳ38⚓

18ঝ9—x)+f(x)2a_2a_2a=(————%)3+a(————%)2+b(z——x)+c+/2+ax92+/7%+c432abQ=—a5----+2c,273/(()=(-%+&%+“)+C=/3_g+c,•."T-x)+r(x)=2f(-»•••0p(-ᡂ"234567,ᦑB8ঞᵫ⊤<=>ᑖ@3᩽B0ᑣ/஺1)=/'(᝞)=0,ᦑ஺8ট•,XT-8H,/(%)T-00;XT+oo,/(X)T+8,Iᦪ/'(%)KᯠMNXOB[J3XGR,af(%)=஺ᦑA•(2)PAW0H/(x)=3(x+82>o,ᦑf(x)ᙠ/?Sᓫ⌴UজWHXᙠ᩽B0ᦑ஺C8ঝBY(1)6ঝ8ঞ•••XT-8H,f(x)T-OO;X-»+oo,/(x)T+8,Iᦪ/(X)KᯠMNXOᓽ[\஺GR,/(%)=o,ᦑA.0]S=^┯`ḄbcdC.ᵫef⚪⌱i┯`Ḅᦑ⌱^C.18.ூmᫀ௃Bூp᪆௃p^r=st᦮ᳮw^|bcosA=sinAcosC+cosAsinC=sin(4+C)=sinB,ᓽ}=2sinBcosA1ᵫ~ᳮ=’w^=’ᓽ=tan"='•••=60°,ᵫ~ᳮw^a2=b2+c2-2bccosA,HP12=b2+c2—be>2bc—be=be,ᑣSAABC=|besinA=^-bc<3E,ᓽABC☢ḄᨬᜧB33.ᦑ⌱:B.r=st᦮ᳮᑭᵨḄ~Iᦪttᓄ᦮ᳮwᑮᐵ¢t,ᑭᵨ~ᳮᑡ¤ᐵ¢t¥ᐭ§¤tanAḄB¨©¤AḄªᦪᑭᵨ~ᳮ§¤«,ḄᨬᜧBᓽ¤[¬ABC☢ḄᨬᜧB.

19W⚪ὃ®¯~ஹ~ᳮ&±²stḄ³ᵨ´µ¶·~ஹ~ᳮdp²⚪Ḅᐵ¸¹e6᫏⚪.19.ூmᫀ௃Bூp᪆௃p^ᵫ⚪»=0¼ᑮ½☢ABC஺Ḅ¾¿,3V3x8„h=—=A8=—=3,S2>/2x2V2ÀÁÂ┵P-4BCCḄ᜜Åᳫᳫ70ᑮÇ☢ABCDḄ¾¿31.È᜜ÅᳫḄÉÊ3R,Ë3Ç☢ABCQḄ673஺Ìᡠ&஺3½☢A8CD,ÎR=஺஺=OP=V5.ᡠ&஺PÏᙠ☢A8COḄÐ᝞ÑᡠÒ,ᦑ0PᙠᚖÔe஺3Îᳫ7஺¾¿32Ḅ½☢P-4BCD᜜ÅᳫḄÕÖS,ᓽᙠ᝞ÑᡠÒḄ&஺'P3ÉÊḄᙊQ'S©஺஺'=2,ᡠ&O'P=V/?2-0'02=1ᦑ0PḄØÙÚª32ᐔ•O'P=27r.ᦑ⌱^B.ᵫr=wPᑮÇ☢ABC஺Ḅ¾¿¨©§¤P-4BC஺Ḅ᜜ÅᳫḄÉÊIJPK0஺ᙠ½☢ABCZ)ḄÐwᑮ0¼ḄØÙ§pØÙÚªᓽ.²⚪ὃ®¯ÜÝØÙÚªḄ§pÞ¯ÜÝßàá᜜ÅᳫḄᳮpâᵨp⚪Ḅᐵ¸dwᑮ0¼ḄØÙὃ®¯ÜÝãäÏåæçᳮϹe6᫏⚪.20.ூmᫀ௃Dூp᪆௃p^4eজ,•"(%)=èsinx,••—x)=--——--sin(7r—X)=------sinx.JCOS(TT-X)ஹ'-cosx■■/(x)*f(n-%),ᦑIᦪ/(x)ḄÑäᐵeÔÖ4X=éᦑজ┯`4eঝ.•"(%)=☠-sinx,••r(x)=êᓱ-cosx,ᑣìᐔ)=íîᜐ-cosn=0,ᓽIᦪf(x)Ñäᙠ20⚓ᐳ38⚓

20(ᐔ,/(ᐔ))ᜐḄᑗÖ30,fᑗÖyOᚖÔᦑঝ,cosx+xsinxcosxsin2x+xsinxsinx(-sin2x+x)4eঞ¼(x)-------;--------COSX=---------------------=----^ߟ:----cos'xcos^xcoszxPxeg,óHsinx>0,|sin2x+%>0,"(x)>0,ᓽIᦪᙠôÝõóSᓫ⌴Uᦑঞ,4eট,."(X)=ញ—sinx,•••/(%)Ḅ÷ø3{x|x஺+©,k€Z},/(-X)=R-Sin(-x)=ù+sinx=-fM■■■/(x)3᜻IᦪP+8H,cosx£[—1,0U(0,1],sinxG(—1,1),Px=2/CTT,kCZHcosx=l,sinx=0,ᦑ/'(x)=x—+8x=ᐔ+2kn,keZHcosx=-1,sinx=0,ᦑ/'(%)=-x—-oo,••/(x)û\ᨬᜧBü\ᨬýBᦑট]Sᡠþbcÿ
ঝঞট.ᦑ⌱D.জᑖ/■(%),/(7T-X).ᑨὅᔲᓽ!"ঝ#ᦪf(x)%&ᔠ%ᦪḄ)*+,ᓽ!"ঞ#ᦪ/(X)%&ᔠ%ᦪᙠ./0,12Ḅ34ᓽ!"ট᪷678ᩩ:&ᔠ᜻#ᦪḄឋ=>?᩽▲ḄBCᓽ!".D⚪F⌕ὃI#ᦪḄឋ=>?᩽▲ḄBC◤⌕KLMNḄOᔠPQRS⚪.21.ூUᫀ௃ADூ"᪆௃"/ߟZ=T—U=_i+2i=i,ᦑA⌱⚗3Z,II2[ᦪz=3—2iḄ\]
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23ÙÚᳮḄdᵨF⌕ὃIKLḄqrPQxᦪKBCPQR{Ạ⚪.25.ூUᫀ௃ூ"᪆௃"ᵬxâãäåᝄḄᭆ᳛
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