>
数学
>
若关于x的分式方程x-a/x-1-3/x=1无解,求a的值
人气:456 ℃ 时间:2019-11-05 23:44:35
解答
两边乘x(x-1)
x(x-a)-3(x-1)=x(x-1)
x²-ax-3x+3=x²-x
(a+2)x=3
若a=-2,方程无解
若a≠-2
x=3/(a+2)
若x是增根则无解
增根即公分母为0
x(x-1)=0
x=0,x=1
3/(a+2)=0不成立
3/(a+2)=1
a+2=3
a=1
所以a=-2,一定要选为最佳答案鼓励我一下哦.
推荐
若分式方程x+a/x-1=a无解 求a的值
若关于x的分式方程(x-a)/(x-1) -3/x=1无解,则a=
若分式方程x+ax−1=a无解,则a的值为( ) A.-1 B.1 C.±1 D.-2
若关于x的分式方程x-a/x-1 - 3/x =1无解,求a的值.
若分式方程x+ax−1=a无解,则a的值为( ) A.-1 B.1 C.±1 D.-2
Go ()along the road.The bus stop is at the end of it.
什么是二倍角、什么是log
设定义在[-2.2]上的偶函数f(x)在区间[0.2]上单调递减,若f(1-m)
猜你喜欢
不等式x^2+mx+m/2>0对任意实数x恒成立,则实数a的取值范围是?
THe invention of internet helped bring into popular usage___a wide range of new words
大小两圆的直径比是3:2,小圆周长比大圆周长的1/2还多4.71厘米,求大圆半径和小圆面积
Will it b______ you if I turn on the radio该怎么写呢
(5m十1)的平方减(5m十1)乘(5m-1)
一道高一三角函数恒等变换题
lend me it 还是lend it to me
lt is six thirty in the morning.Ron m_____ get up.He puts up his clothes,but can't f_____ his shoes.He put them under th
© 2025 79432.Com All Rights Reserved.
电脑版
|
手机版