点(1,2)在曲线上.
y'=3-2x
y'(1)=3-2=1
由点斜式即得切线方程：y=1(x-1)+2=x+1
猜你喜欢
- 1he asked me to go to the meeting yesterday 被动语态
- 2He was so tired that he couldn't go on working.(用too...to...及continue改为同义句)
- 3He got good grades in the English exam but he still此处三空………hard at English.
- 4初一上期 语文 新支点19课的答案
- 5力这个字加偏旁可以加什么
- 6一般现在时的例句,以及对应的一般疑问句,肯定否定回答,否定句,特殊疑问句.
- 7现代汉语——指出下列合成词的构成方式
- 8the only thing you do is to yell and i will be there for you
- 9用几个词语描写庐山瀑布
- 10甲乙两车从甲乙两地同时开出,相向而行,9小时相遇,相遇时甲行了全程的40%,照这样计算,乙车行完全程用几小时