2021年高考数学之真题+模拟重组卷（新高考地区专用）（解析版）

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2322.(2020•ᜩÝ|ὃ~⚪)ßᦪ/(x)=x3+-nx/eA),f(x)E/(x)Ḅâßᦪ.(I)¦ᦇ=6¨(i)]äy=/(x)ᙠ(1Jপ)ᜐḄᑗ©3O(ii)]ßᦪg(x)=/(x)-f'(x)+—ḄᓫëìíM᩽C3X(n)¦ï…3¨]^ñòḄX,X,6[1,+00)ó%>X,,ᨵ/-(ஹ)+/%)>/(ᓃ)(/()).2x-x12ூaᫀ௃(1)(i)y=9x—83(ii)g(x)Ḅ᩽YCEgপ=1,õ᩽ᜧC3(II)^_öj᪆.ூij௃(I)প¦¼6¨/(x)=d+61nx,/(=3/+3ù/প=1,rপ=9,ᡠtäy=ᙠᜐḄᑗ©Ey—1=9(û-1),ᓽy=9x-8.3(ii)ü⚪ò,g(x)=x3-3x2+61nx+—,XG(0,4-OO).4ýùg'(x)=3þ2—6JVH-----»᦮ᳮg(1)=++”-.ᓝCX"᜛(x)=0,=1.Xᓄg'(x),g(x)Ḅᓄ᝞!⊤:X(஺,1)x=\(1,+?)

24g'(x)—0+g(x)ᓫ(⌴*᩽,-ᓫ(⌴.ᡠ01ᦪg(x)Ḅᓫ(⌴*345(0,1),ᓫ(⌴.345(1,+00)6g஺)Ḅ᩽,-5g(l)=l,8᩽ᜧ-.(II);<ᵫ(x)=x3+%inx,/(%)=3᮱+4XEFGḄXe[l,+oo),K᳝>N2஺>1),ᑣ(X-X)(/,(X)+/,(A))-2(/(X,)-/(X))12122(kkஹ(ஹ=(X]—MH---F3%2—__2-x6+᝕In--I%)xjx22>(\=-%2—3X^X4-3x^2+k----2k

25—2জ/z(x)=x----2Inx,xe[l,+oo).xi?(1ஹQl/(x)=l+r——=1\\>0,ᔆXIX)ᵫ^஻(x)ᙠ[l,+8)ᓫ(⌴.ᡠ0ব஻c>ᑘ1),GP?---21n?>0.

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2021ὃᔁᑖG⚗ᔁᑖ150ᑖὃ4120ᑖ.ᔁὃᵨ0.5⁐¡¢£¤¥¦Ḅஹ§¨©ªᑏᙠᔁ¬Ḅ®¯.\ஹᓫ⚗⌱±⚪oᜧ⚪ᐳ8,⚪´,⚪5ᑖᐳ4ᑖm1.2020•ᐰ·¸¹º⚪»¼oᦻmm¾w¿ᦪz=E-+5i,Á|]Ã=om2-1A.75B.572C.372ூᫀ௃B

27ூÈ௃5i5i(2+i)---------Xᵫ⚪z=p+5i=7:7\+51=-1+71,ᡠ0Ë=J(-l)2+72=5Í.2-1(2-11vᦑ⌱B.2.(2020•□ÐÑÒ\ÓÔ¸¹ᐸÖ×Ø)¾wᐰÙ5ÚᦪÙR,ÙᔠA={R-3஺},LMqN,ᑣÚᦪ஺Ḅñ-óô()A.[3,+00)B.(3,+oo)C.(—oo,-l]D.ூᫀ௃CூÈ௃3+2x—õ>0,ᓽ(x—3)(x+l)<0,-l

28ᑣA/=æ|y=lno3+2x-fm}={x|-l

29__ln2,,In2Za=log2=[-,b=log2=--,v01ᑣ/?vaᑣ2sinf2x+—1=77=,,\ᐔᵫxe0,—2n7)%|2x+—e—~~■I6J6666ᡠsinf2x4--^je-1,12%2sin2x+?)e[-1,2],

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35DiGABA.Pᑮ)☢QEFḄ*+B.,-PQ.)☢PEFᡠᡂḄ0C.1┵3-QEEḄ5D.Ḅ☢5ூ7ᫀ௃ACDூ:;௃)☢QE3<%)☢A4஺஺%=Ḅ)☢>?3ᑮ)☢QE3Ḅ*+A=@)☢PEFᓽ)☢PCD,B஺ᙠ,-44>?.)☢PCD)C஺ᑮ)☢D!Ḅ*+E஺FGH.PQḄJᙠKᓄ>?M-PQ.)☢PERᡠᡂḄ0NᙠKᓄB┯P@Pᑮ,-COḄ*+%=BQ3ḄJRK>?S-EFS஺ᑮ)☢PEFḄ*+,TB1┵P-QEFḄ5C=@\BJ/CD,஺ᑮEF"Ḅ*+VḄJRK...QEFḄ☢5D=.ᦑ⌱YACD.12.2020•[\[]
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38aḄᨬ¼1,ᦑ7ᫀYL14.2020•ÕÖCו1ØÙÚÛÜᰦÞßᐰáâãäåḄæG◤⌕TAé▾ëìíḄ6îᵱéð&ñîòéóஹ4î᝕éð&ñîòéóᑖc⌱ö3îᵱéðf2î᝕éð⌕÷øùᨵîòéóÏûᑣRüḄ⌱öᫀᐳᨵý.&ᵨᦪþÿ
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