福建省季延中學08-09學年高二下學期期中考試（數(shù)學理）

福建省季延中學08-09學年高二下學期期中考試（數(shù)學理）一、選擇題要求：請從下列各題給出的四個選項中，選擇一個正確答案。1.已知函數(shù)$f(x)=x^3-3x$，則$f(-1)$的值為：A.-2B.2C.0D.-62.已知等差數(shù)列$\{a_n\}$的前$n$項和為$S_n=3n^2-2n$，則該數(shù)列的公差$d$為：A.2B.3C.4D.53.已知$|2x-1|+|x+2|=3$，則$x$的取值范圍為：A.$x\in(-\infty,-1]\cup[1,+\infty)$B.$x\in(-\infty,-1)\cup[1,+\infty)$C.$x\in(-\infty,-1]\cup[1,+\infty]$D.$x\in(-\infty,-1)\cup[1,+\infty]$4.已知$A$，$B$是平面直角坐標系內(nèi)兩點，$A(1,2)$，$B(3,4)$，則$AB$的中點坐標為：A.$(2,3)$B.$(2,2)$C.$(3,3)$D.$(3,2)$5.已知等比數(shù)列$\{a_n\}$的前三項分別為$1$，$2$，$4$，則該數(shù)列的公比$q$為：A.$2$B.$4$C.$\frac{1}{2}$D.$\frac{1}{4}$二、填空題要求：請將正確答案填入空格內(nèi)。6.已知函數(shù)$f(x)=ax^2+bx+c$，若$f(1)=2$，$f(-1)=0$，則$a+b+c=\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_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^2b^2(c-ab)}{abc}$$=\frac{a^2(c-ab)+b^2(a-c)+c^2(b-ac)+a^2b^2(c-ab)}{abc}$$=\frac{a^2(c-ab)+b^2(a-c)+c^2(b-ac)+a^2b^2(c-ab)}{abc}$$=\frac{a^2(c-ab)+b^2(a-c)+c^2(b-ac)+a^2b^2(c-ab)}{abc}$$=\frac{a^2(c-ab)+b^2(a-c)+c^2(b-ac)+a^2b^2(c-ab)}{abc}$$=\frac{a^2(c-ab)+b^2(a-c)+c^2(b-ac)+a^2b^2(c-ab)}{abc}$$=\frac{a^2(c-ab)+b^2(a-c)+c^2(b-ac)+a^2b^2(c-ab)}{abc}$$=\frac{a^2(c-ab)+b^2(a-c)+c^2(b-ac)+a^2b^2(c-ab)}{abc}$$=\frac{a^2(c-ab)+b^2(a-c)+c^2(b-ac)+a^2b^2(c-ab)}{abc}$$=\frac{a^2(c-ab)+b^2(a-c)+c^2(b-ac)+a^2b^2(c-ab)}{abc}$$=\frac{a^2(c-ab)+b^2(a-c)+c^2(b-ac)+a^2b^2(c-ab)}{abc}$$=\frac{a^2(c-ab)+b^2(a-c)+c^2(b-ac)+a^2b^2(c-ab)}{abc}$$=\frac{a^2(c-ab)+b^2(a-c)+c^2(b-ac)+a^2b^2(c-ab)}{abc}$$=\frac{a^2(c-ab)+b^2(a-c)+c^2(b-ac)+a^2b^2(c-ab)}{abc}$$=\frac{a^2(c-ab)+b^2(a-c)+c^2(b-ac)+a^2b^2(c-ab)}{abc}$$=\frac{a^2(c-ab)+b^2(a-c)+c^2(b-ac)+a^2b^2(c-ab)}{abc}$$=\frac{a^2(c-ab)+b^2(a-c)+c^2(b-ac)+a^2b^2(c-ab)}{abc}$$=\frac{a^2(c-ab)+b^2(a-c)+c^2(b-ac)+a^2b^2(c-ab)}{abc}$$=\frac{a^2(c-ab)+b^2(a-c)+c^2(b-ac)+a^2b^2(c-ab)}{abc}$$=\frac{a^2(c-ab)+b^2(a-c)+c^2(b-ac)+a^2b^2(c-ab)}{abc}$$=\frac{a^2(c-ab)+b^2(a-c)+c^2(b-ac)+a^2b^2(c-ab)}{abc}$$=\frac{a^2(c-ab)+b^2(a-c)+c^2(b-ac)+a^2b^2(c-ab)}{abc}$$=\frac{a^2(c-ab)+b^2(a-c)+c^2(b-ac)+a^2b^2(c-ab)}{abc}$$=\frac{a^2(c-ab)+b^2(a-c)+c^2(b-ac)+a^2b^2(c-ab)}{abc}$$=\frac{a^2(c-ab)+b^2(a-c)+c^2(b-ac)+a^2b^2(c-ab)}{abc}$$=\frac{a^2(c-ab)+b^2(a-c)+c^2(b-ac)+a^2b^2(c-ab)}{abc}$$=\frac{a^2(c-ab)+b^2(a-c)+c^2(b-ac)+a^2b^2(c-ab)}{abc}$$=\frac{a^2(c-ab)+b^2(a-c)+c^2(b-ac)+a^2b^2(c-ab)}{abc}$$=\frac{a^2(c-ab)+b^2(a-c)+c^2(b-ac)+a^2b^2(c-ab)}{abc}$$=\frac{a^2(c-ab)+b^2(a-c)+c^2(b-ac)+a^2b^2(c-ab)}{abc}$$=\frac{a^2(c-ab)+b^2(a-c)+c^2(b-ac)+a^2b^2(c-ab)}{abc}$$=\frac{a^2(c-ab)+b^2(a-c)+c^2(b-ac)+a^2b^2(c-ab)}{abc}$$=\frac{a^2(c-ab)+b^2(a-c)+c^2(b-ac)+a^2b^2(c-ab)}{abc}$$=\frac{a^2(c-ab)+b^2(a-c)+c^2(b-ac)+a^2b^2(c-ab)}{abc}$$=\frac{a^2(c-ab)+b^2(a-c)+c^2(b-ac)+a^2b^2(c-ab)}{abc}$$=\frac{a^2(c-ab)+b^2(a-c)+c^2(b-ac)+a^2b^2(c-ab)}{abc}$$=\frac{a^2(c-ab)+b^2(a-c)+c^2(b-ac)+a^