y'=sec²x
所以y''=2secx*(secxtanx)=2sec²xtanx
猜你喜欢
- 11.I Will give you a call the minute he arrives.(改为同义句)
- 2we didn't see him at the lecture yesterday,he___itA,can't have attended B.needed have attended
- 3把句子补充完整 下雨了 ,雨点像什么【 】
- 4有一根丝带,第一次剪去全长的五分之二,第二次剪去六米,这时丝带原来长多少米�
- 5We have an English speech at our school on November.____ ____ ____ ____an English contest at you school
- 6what country is good at skating
- 7电池两端未通过导线连接时是不是也有电场
- 8求函数最大值最小值及对应x的集合 y=2sin(x/3+π/4)
- 9密闭容器内有一定质量的理想气体.温度升高5摄氏度,气体压强增量为原来的百分之一,则气体原来的温度是多少摄氏度?
- 10电阻率公式谁发明的啊?