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方程的ex=的根所在的区间是( )
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高一上学期数学《2017-2018学年广东省广州市越秀区培正中学高一(上)11月段考数学试卷》真题及答案
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方程的根所在区间为
(3,4)
(4,5)
函数fx=ex+x-2的零点所在的一个区间是
(-1,0)
(0,1)
(1,2)
(2,3)
方程的根所在区间为
方程lgx+2x﹣10=0的根所在的一个区间是
(3,4)
(4,5)
(5,6)
(2,3)
方程lnx=6-2x的根所在大致区间是
(1,2)
(2,3)
(3,4)
(5,6)
已知关于x的一元二次方程x2+2mx+2m+1=0.1若方程两根一正一负求实数m的取值范围2若方程有
方程4x3﹣5x+6=0的根所在的区间为
(﹣3,﹣2)
(﹣2,﹣1)
(﹣1,0)
(0,1)
方程的根所在的一个区间是
方程lgx+x=0的根所在区间是
(-∞,0)
(0,1)
(1,2)
(2,4)
用二分法求方程x3﹣2x﹣1=0的一个近似解时现在已经将一根锁定在区间12内则下一步可断定该根所在
设fx=3x+3x-8若用二分法求方程3x+3x-8=0在区间12内的近似解的过程中得f10f1.2
(1,1.25)
(1.25,1.5)
(1.5,2)
不能确定
已知关于x的二次方程x2+2mx+2m+1=0.1若方程有两根其中一根在区间-10内另一根在区间12
根据表中的数据可以判定方程ex-x-2=0的一个根所在的区间是
(-1,0)
(0,1)
(1,2)
(2,3)
方程的实数根的所在区间为
(3,4)
(2,3)
(1,2)
(0,1)
方程lgx+x=0的根所在的区间可能是
(-∞,0)
(0.1,1)
(1,2)
(2,4)
求证方程5x2-7x-1=0的一根在区间-10另一个根在区间12上.
利用计算器算出自变量和函数值的对应值如表则方程的一个根所在区间为.[
根据表格中的数据可以判定方程ex-x-2=0的一个根所在的最小区间为.
用二分法求方程x3+4=6x2的一个近似解时已经将一根锁定在区间01内则下一步可断定该根所在的区间为
在用二分法求方程x3-2x-1=0的一个近似根时现在已经将根锁定在区间12内则下一步可以断定根所在的
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