解方程:1.2/y+3y/y-1=3 2.x+1/x-1-4/x²-1=1 3.2/x-1=4/x²-1
解方程:1.2/y+3y/y-1=3 2.x+1/x-1-4/x²-1=1 3.2/x-1=4/x²-1
數(shù)學(xué)人氣:678 ℃時(shí)間:2020-05-21 18:50:53
優(yōu)質(zhì)解答
1.2/y+3y/y-1=3 兩邊乘以y(y-1)得2y-2+3y²=3y²-3y5y=2∴y=2/5檢驗(yàn):y=2/5是方程的解2.x+1/x-1-4/x²-1=1 兩邊乘以(x+1)(x-1)得x²+2x+1-4=x²-12x=2x=1檢驗(yàn):x=1是增根3.2/x-1=4/x²-1兩...
我來回答
類似推薦
- 解方程 三分之二x²=七分之五x 要兩個(gè)答案,下同 (3y-4)²-(y-1)²=0
- 用適當(dāng)解方程(1)2√x²-√2=0(2)(2x-3)²-2x+3=0(3)(3y-1)²-8(3y-1)+15=0
- ( 解方程,{(x+2)²-(y+4)²=(x+y)(x-y),x-3y=-2,運(yùn)用平方差
- 2.解方程:(3y-1)²=(y-3)²
- 解方程組(x+2)2?(y?3)2=(x+y)(x?y)x?3y=2.
- 函數(shù)f(x)=sinx-cosx^2的最小值是?
- 英語翻譯
- I took my grandpa to the hospital this morning,_____ I missed the first class.
- So crazy
- 方差是各個(gè)數(shù)據(jù)與平均數(shù)之差的平方的平均數(shù)
- 函數(shù)y=f(x)與它反函數(shù)y=f^-1(x)怎么讀?
- These are photos of my families.Look at them 改錯(cuò)
猜你喜歡
- 1平面與平面重合,是否屬于平行一類?那重合的兩直線,也屬于平行一類的嗎?
- 2非洲每年因饑餓死亡的人數(shù)及現(xiàn)在饑餓人口數(shù)量拜托各位了 3Q
- 3decide to do sth.還=什么
- 4(7/8)o you think of london?B:5.____london is one of the liveliest cities
- 5啤酒可以托運(yùn)嗎
- 6邊長(zhǎng)為2√6的等邊三角形的中心到一邊的距離為?
- 7please give your hand to help me
- 8已知2的X次方等于3的Y次方等于6的Z次方不等等于1,證明X分之一加Y分之一等于Z分之一.
- 9幫我做做?
- 10機(jī)械分析天平TG628A的使用說明書
- 11in winter ,we wear warm coats to protect our bodies_.
- 12( )was most importance to her ,she told me,was her family it this what as