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        1. }Ŀij@MP(x) 20 P5 װl(f)\ӆTM(sh)քe 1820181618t@ 5 \ӆTijɿe`ǣ

          A.(sh) 18B. 0C.λ(sh) 18D.ƽ(sh) 18

          𰸡B

          (j)(sh)λ(sh)ƽ(sh)ͷĶxӋ㹫ʽքeMн𼴿ɣ

          18 F(xin) 3 F(xin)ĴΔ(sh)

          ొ(sh) 18

          A x_

          @M(sh)(j)ƽ(sh)ǣ18+20+18+16+18518

          t S2 [18-182+20-182+18-182+16-182+18-182]=1.6 B xe`D x_

          @Щ(sh)СО 1618181820gĔ(sh) 18 tλ(sh) 18

          C x_

          t@ 5 \ӆTijɿe` B

          xB

          (x)ϵд
          P(gun)(x)}

          ĿД(sh)W(xu) Դ

          }ĿRtACBУACB90cDABһc

          1D1CDABCCD2ADDB

          2D2ACBCEFCDHEFcBCEcACFֵ

          3D3ACBCcHCDϣҡAHD45CH3DHֱӌtanACHֵ

          鿴𰸺ͽ>>

          ĿД(sh)W(xu) Դ

          }ĿڳAεĺ(sh)W(xu)(x)҂(jng)v_(sh)ı_ʽú(sh)Dо|(zh)һһ\ú(sh)Q}ČW(xu)(x)^̣ڮ(sh)Dr҂ͨ^cƽƵķW(xu)ĺ(sh)Dͬr҂ҲW(xu)(x)˽^ֵx

          Y(ji)潛(jng)vČW(xu)(x)^̣F(xin)ځQĆ}:ں(sh)(dng)r(dng)r

          @(sh)ı_ʽ

          ڽoƽֱ(bio)ϵՈϲgķ@(sh)ĈD

          ֪(sh)ĈDDʾY(ji)ĺ(sh)DֱӌʽĽ⼯

          鿴𰸺ͽ>>

          ĿД(sh)W(xu) Դ

          }ĿDABCDУBADƽ־CDcEBCL cFBBEF=45㣮

          1ABCDǾ(2)AB=14DE=8sinAEBֵ.

          鿴𰸺ͽ>>

          ĿД(sh)W(xu) Դ

          }ĿABLjAOֱCDABHCDcNMCN=CAANAOcF^cFACƽоCDLcMABLcE

          1CEMLjAOо

          2ACCD=58AN=3AOֱLȣ

          3ڣ2ėlֱӌFN

          鿴𰸺ͽ>>

          ĿД(sh)W(xu) Դ

          }Ŀij(sh)W(xu)dȤСM(j)W(xu)(x)(sh)Ľ(jng)ͨ^бcBķ(sh) yĈDc|(zh)Mоо^Ոa

          1y c x Ď׽M(yng)ֵ±

          x

          3

          2

          1

          1

          2

          3

          y

          6

          6

          m

          (sh) y׃ x ȡֵ m ֵ

          2ڽoƽֱ(bio)ϵϱиM(yng)ֵ(bio)c(sh) yĴˆDԓ(sh)ăɗl|(zh)

          3ͬһ(bio)ϵЮ(sh) y1x ĈD󣬲(j)Dֱӌ(dng) yy1 r׃ x ȡֵ

          鿴𰸺ͽ>>

          ĿД(sh)W(xu) Դ

          }ĿڇHRِO(sh)AȫRBRCARĿСǺСۅԓِµ־Ը߷(w)Mί־ԸSC䵽ĿM.

          1СDZ䵽AȫRĿMĸʞ .

          2ØDбСǺС۱ֵͬһĿ(bio)MM־Ը(w)ĸ.

          鿴𰸺ͽ>>

          ĿД(sh)W(xu) Դ

          }ĿDڶκ(sh)ĈDСͬW(xu)^óחlϢP(gun)һԪηo(sh)Ϣ_Ă(sh)飨

          A.4B.3C.2D.1

          鿴𰸺ͽ>>

          ĿД(sh)W(xu) Դ

          }Ŀ֪(sh)y1=ĈDcһκ(sh)y2=ax+bĈDcA(1,4)cB(m,-2) .

          (1)@ɂ(sh)P(gun)ϵʽ

          (2)^D,ֱӌʹy1>y2׃xȡֵ.

          鿴𰸺ͽ>>

          ͬ(x)Դ