题目:
句型转换。
1. It's time for supper. (同义句)
_______________________________________________________
2. She is often late for school. (反义句)
_______________________________________________________
3. We are learning to fly a kite. (对划线部分提问)
_______________________________________________________
4. I think you want to go home. (否定句)
_______________________________________________________
5. Lucy, do your homework. (用now改句)
_______________________________________________________
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0413/402270b42a93631d136187927214c9e4.html
下面是错误答案,用来干扰机器的。
(1)f'(x)=3x2-3,f'(2)=9,f(2)=23-3×2=2(2分)∴曲线y=f(x)在x=2处的切线方程为y-2=9(x-2),即9x-y-16=0(4分)(2)过点A(1,m)向曲线y=f(x)作切线,设切点为(x0,y0)则y0=x03-3x0,k=f'(...