若x1、x2、都满足｜2x-1｜+｜2x+3｜=4,且x1＜x2,则x1-x2的取值范围是?

若x1,x2都满足条件|2x-1|+|2x+3|=4,且x1 若X1.X2都满足条件|2X-1|+|2X+3|=4,且X1 若x1、x2、都满足｜2x-1｜+｜2x+3｜=4,且x1＜x2,则x1-x2的取值范围是? 若x1、x2,都满足条件│2x-1│+│2x+3│=4,且x1 若函数f(x)=1/3x^3-a^2x满足对于任意的x1,x2属于[0,1]都有|f(x1)-f(x2)| 若函数f(x)=(1/3)(x^3)-(a^2)x 满足：对于任意的x1,x2∈[0,1]都有|f(x1)-f(x2)| 若x1满足2x+2^x=5,x2满足2x+2log2(x-1)=5,则x1+x2=?2log2(x-1) 中间的2是底,我搞半天都不懂 若二次函数f1(x)、f2（x）同时满足条件：（1）f(x)=f1(x)+f2(x)在R上单调递减；（2）g（x）=f1(x)-f2(x)对（2）对任意实数x1,x2(x1≠x2)都有g(x1)+g(x2) /2>g (x1+x2 /2 ),则f1(x)= f2(x)= 100分若x1满足2x+2的x次方=5,x2满足2x+2log2(x-1)=5,则x1+x2=? 若x1满足2x+2x=5,x2满足2x+2log2(x-1)=5,则x1+x2等于? 若x1满足2x+2的x方=5,x2满足2x+2log2(x-1)=5,求x1+x2 若x1满足2x+2^x=5.x2满足2x+2log2(x-1)=5.求x1+x2=? 若x1满足2x+2的x方=5,x2满足2x+2log2(x-1)=5,求x1+x2 若x1满足2x+ 2^x=6,x2满足x+ log2(x-1)=3,则x1+ x2=? 若x1满足2x+2^x=5,x2满足2x+2log2(x-1)=5 已知函数f(x)=ax^2 +4x-2满足对任意x1,x2属于R且x1不等于x2,都有f[(x1+x2)/2] 记满足下列条件的函数f(x)的集合为M:当|x1|≤1,|x2|≤1时,|f(x1)-f(x2)|≤4|x1-x2|,若有函数g(x)=x^2+2x-1,则g(x)与M的关系是?下面那两个我都看不懂啊。比如说|g(x1)-g(x2)|为什么可以小于|x1^2+2x1-x2^2-2x2|啊 已知方程x^2+8x+k=0两根x1,x2,满足x1--2x2=1,求k是满足X1-2倍的X2