x-1分之x 1 x方-1分之4-1
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(x+2)/(x-2)-1=3/(x²-4)(x+2-x+2)/(x-2)=3/(x-2)(x+2)(x≠2)4=3/(x+2)4x+8=34x=-5x=-5/4你的题目不够清晰
8X=2分之18x=1/2x=1/164分之3X=8分之33/4x=3/8x=1/29分之8X=27分之168/9x=16/27x=16/27*9/8x=2/310分之3X=100分之33/10x=3
f(1/x)=1-x^2+1/x^2=-f(x)直接代入即可再问:能写的再具体点吗我不太明白谢谢再答:哦我把题目看错了你的题目是对的吗再问:嗯题目是对的加我Q1047763981这样说方便再答:我没有
x/(1-x)+x/(1+x)+2x/(1+x^2)+4x/(1+x^4)=0[x(1+x)+x(1-x)]/(1-x^2)+2x/(1+x^2)+4x/(1+x^4)=02x/(1-x^2)+2x/
(x-2)/(x+2)-1=3/(x²-4)[(x-2)-(x+2)]/(x+2)=3/[(x-2)(x+2)]-4/(x+2)=3/[(x-2)(x+2)]-4(x-2)=3x=-5/4代
x^2/(x^4+x^2+1)取倒数(x^4+x^2+1)/x^2=x^2+1+1/x^2=x^2+2+1/x^2-1=(x+1/x)^2-1=3^2-1=8(取倒数)所以x^2/(x^4+x^2+1
(-∞,-2)单调递减【-2,+∞)递增(-14/3,+∞)
x分之4再问:有过程吗他那个是x-1分之1-x+1分之1的再答:[1/(x-1)-1/(x+1)]/[x/(2x方-2)]=[2/(x方-1)]*[2(x方-1)/x]=(2*2)/x=x/4
(x^2+2x+1)/(x^2-3x-4)=(x+1)^2/(x+1)(x-4)=(x+1)/(x-4)
把每个式子因式分解x的方+5x+4=(x+1)(x+4)x方-5x+6=(x-2)(x-3)………………
2X-X分之1-2X方-1分之4X=32X-(1/X)-[4X/(2X^2-1)]=3[(2X^2-1)/X]-[4X/(2X^2-1)]=3设K=2X^2-1)/X,则K-4/K=3K^2-3K-4
x/(1-x)+x/(1+x)+2x/(1+x^2)+4x/(1+x^4)=[x(1+x)+x(1-x)]/(1-x^2)+2x/(1+x^2)+4x/(1+x^4)=2x/(1-x^2)+2x/(1
=(x-4)/(x+1)(x-1)除以(x-4)(x+1)/(x+1)平方+1/(x-1)=(x-4)/(x+1)(x-1)乘以(x+1)平方/(x-4)(x+1)+1/(x-1)=(x-4)/(x+
x方-1分之x方+x化简2x(1+x)
(x-1)/(x^2+3x+2)+6/(2+x-x^2)-(10-x)/(4-x^2)=(x-1)/(x+1)(x+2)-6/(x+1)(x-2)-(x-10)/(x+2)(x-2)=[(x-1)(x
x/(x²+2x+1),(x-1)/(x²+x),1/(x²-1)式1:x/(x+1)²,式2:(x-1)/[x(x+1)],式3:1/[(x+1)(x-1)]
原式=[(x+2)/x(x-2)-(x-1)/(x-2)²]×x/(x-4)=[(x²-4-x²+x)/x(x-2)²]×x/(x-4)=[(x-4)/x(x-
=(x+2)/(x²-4)+(x-2)/(x²-4)+(x平方+4)分之2x+(x四次方+16)分之4x三次方=2x/(x²-4)+(x平方+4)分之2x+(x四次方+1
由x二次方-x+4分之1=0得x=1/2x+2分之1=1再问:你怎么算的,不过谢谢
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