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1.已知集合A={x|x31.已知集合A={x|x31.已知集合A={x|x31.crA交crB={x=10}2.a>=7

A={x|x3},B{x|4x+mA={x|x3},B{x|4x+m尽快回答!A={x|x3},B{x|4x+m解不等式4x+m

若点(x1,1),(x2,2),(x3,-3)都是反比例函数y=-1/x图象上的点,则()A.x1>x2>x3B.x1>x3>x2C.x3>x2>x1D.x3>x1>x2若点(x1,1),(x2,2)

A=-1/2x3x2-x3,B=2(x3x2-1/2x-1),求1/2(AB)-1/3(A-B)的值A=-1/2x3x2-x3,B=2(x3x2-1/2x-1),求1/2(AB)-1/3(A-B)的值

f(x)=x2(x>0)或f(x)=x3-(a-1)x+a2-3a-4(xf(x)=x2(x>0)或f(x)=x3-(a-1)x+a2-3a-4(xf(x)=x2(x>0)或f(x)=x3-(a-1)

已知f（x）=x3-3x+1=a,求f(-x)已知f（x）=x3-3x+1=a,求f(-x)已知f（x）=x3-3x+1=a,求f(-x)x3-3x+1=a,所以x3-3x=a-1,f(-x)=-x3

已知f(x)=x3-3x+1=a,求f(-x)的值已知f(x)=x3-3x+1=a,求f(-x)的值已知f(x)=x3-3x+1=a,求f(-x)的值f(x)=x³-x+1=a令g(x)=x

已知f（x）=x3-3x+1=a,求f(-x)已知f（x）=x3-3x+1=a,求f(-x)已知f（x）=x3-3x+1=a,求f(-x)令g(x)=x³-3g(x)=-g(-x)所以g(x

集合A={x|-2≤x3或x集合A={x|-2≤x3或x集合A={x|-2≤x3或x答案为：AUB={x

已知集合A={x|x3≤x已知集合A={x|x3≤x(1)求A∪B,(CrA)∩b;(2)若C∈(A∪B)求a的取值范围.已知集合A={x|x3≤x1)AUB=B(CrA)∩B=={x|x2＜x＜3,

函数f(x)=x3-3x+a如何求导函数f(x)=x3-3x+a如何求导函数f(x)=x3-3x+a如何求导求导公式：(x^n)''=n·x^(n-1),C''=0【C为常数】f''(x)=(x^3)''-(

解高次方程解关于x的方程x3+(a-2)x2-(4a+1)x-a2＋a+2=0解关于x的方程x3+(a-2)x2-(4a+1)x-a2＋a+2=0解高次方程解关于x的方程x3+(a-2)x2-(4a+

如果多项式x4-(a-1)x3+5x2+(b+3)x-1不含x3项和x项,则3a+b=?计算过程如果多项式x4-(a-1)x3+5x2+(b+3)x-1不含x3项和x项,则3a+b=?计算过程如果多项

x3-6x2+ax+b=(x-1)(x-3)(?)a=?b=?x3-6x2+ax+b=(x-1)(x-3)(?)a=?b=?x3-6x2+ax+b=(x-1)(x-3)(?)a=?b=?x3-6x2+

请问x3-6x2+ax+b=(x-1)(x-3)(?)a=?b=?请问x3-6x2+ax+b=(x-1)(x-3)(?)a=?b=?请问x3-6x2+ax+b=(x-1)(x-3)(?)a=?b=?x

(x3-2x2+ax+2)÷(x2-4x+1)=x+2a=-7(x3-2x2+ax+2)÷(x2-4x+1)=x+2a=-7(x3-2x2+ax+2)÷(x2-4x+1)=x+2a=-7(x3-2x2

X3-3X+1=0求X3+1/X3X3-3X+1=0求X3+1/X3X3-3X+1=0求X3+1/X3因为x^3-3x+1=0所以x^3-3x=-1x^3+1=3x1/x=3-x^2(两边同除x）分别

已知代数式A=2x3+3x2-x,B=4x3+8x3-2x+6,当x=1/2时,求式子A-1/2B的值已知代数式A=2x3+3x2-x,B=4x3+8x3-2x+6,当x=1/2时,求式子A-1/2B

已知A=x3+2y3-xy2,B=﹣y3+x3+2xy2,其中x=3分之1,y=2.求a-b的值已知A=x3+2y3-xy2,B=﹣y3+x3+2xy2,其中x=3分之1,y=2.求a-b的值已知A=

已知f(x)=x3-3x+1,且f(a)=2,则f(-a)等于已知f(x)=x3-3x+1,且f(a)=2,则f(-a)等于已知f(x)=x3-3x+1,且f(a)=2,则f(-a)等于f(x)=x3