0<(4x+20)-8(x-1)<8,怎么解
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解九宫格题目(X为未知数)9 X 2 X 7 X 8 X XX X 4 X X 9 X 6 X1 3 X 5 X X X X 24 X X 8 5 X X 1 XX 8 9 4 X 1 6 7 XX 1 X X 3 6 X X 88 X X X X 2 X 3 6X 5 X 6 X X 9 X XX X 7 X 4 X 2 X 1
一元二次不等式习题14-4x平方≥xx(x+2)<x(3-x)+1-x平方-2x+8≥0(5-x)(x+4)<0(x+7)(2-x)>0(3x+2)(2x-1)<0(1/2x-1)(5x+3)≥0
f(X)=8/x + x (0<x<1) 求值域
matlab解数值分析题p=(x-1)*(x-2)*(x-3)*(x-4)*(x-5)*(x-6)*(x-7)*(x-8)*(x-9)*(x-10)*(x-11)*(x-12)*(x-13)*(x-14)*(x-15)*(x-16)*(x-17)*(x-18)*(x-19)*(x-20)解为1,2,3……,20取多个非常小的数用软件工具求解方程p(x)+n*x^19=0,并
麻烦解4道分式方程(20分)(x/2x-5)+(5/5-2x)=1(x+1/x*x-2x)-(1/x)=3/x-2(1-x/5-x)-(5-x/1-x)=8/x*x-6x+5(x+1/x-1)-(4/x*x-1)=1去掉括号,不管前面正负,都不变号~
解不等式组4x+2>8(x-1).4x+20<8x
解不等式:(1)x^2-2x-8<0 (2)x^2-4x+4≤0
已知3(4-x)-8+5x<0 化简:|-1-x|-2|4x+3|
(1+x)(4-x)<0
f(x)=(x^3-2)/[2(x-1)^2]求导f'(x)=[6x²(x-1)²-4(x³-2)(x-1)]/[2(x-1)²]²>0即 6x²(x-1)²-4(x³-2)(x-1)>0 (x-1)[6x²(x-1)-4(x³-2)]>0 (x-1)[6x³-6x²-4x³+8]>0 (x-1)(x³-3x²+4)>0 (x-
1、2X+3>0 -3X+5>0 2、2X<-1 X+2>0 3、5X+6<3X 8-7X>4-5X 4、2(1+X)>3(X-7) 4(2X-3)>5(X+2打安
一元二次方程解答!x(5x+4)=5x+44x^2-45=31x-3x^2+22x-24=0(x+8)(x+1)= -12(3x+2)(x+3)=x+14
二.接不等式(组)1.3x-1<2x+12.(4x-8<x+1 ,x+4<3x+63 (4x-3<3(x+1),1/2x-1≥7-3/2x4 (x+3<2 ,x/2-3<35.(x-1/2<1/4,x/3+x/2≥-2
解不等式.一元二次方程一1)x²+2x-3≤0 2)x²-x-6>0 3)4x²+4x+1≥0 4)x²-6x+9≤0 5)3x²-x-4>0 6)x²-x-12≤0 7)3x²-2x+1<0 8)3x²-4<0 9)2x-x²≥-1 10)4-x²≤0 11)5-4x-x²≥0 12)15-3x
x/a^2-bx+x/b=1 (a,b不等于0)x-8/x-3-x-9/x-4=1/x+3-1/x+8
先化简再求值:(x²-4x+4分之x+8-2-x分之1)÷x²-2x分之x+3 x²-4=0
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不等式方程组答案+过程一定要有过程,好的话答题后再加10分.2X+3>0 -3X+5>0 2X<-1 X+2>0 5X+6<3X 8-7X>4-5X 2X<4 X+3>01+1/2X>2 2(X-3)≤4 1-X>0 X+2<0 5+2X>3 X+2<8 2X+4<0 1/2(X+8)-2>0 5X-2≥3(X