>
数学
>
化简sin^4x-sin^2x+cos^2x
人气:246 ℃ 时间:2020-03-20 18:11:40
解答
sin^4x-sin^2x+cos^2x
=sin^2x(sin^2x-1)+cos^2x
=-sin^2xcos^2x+cos^2x
=cos^2x(1-sin^2x)
=cos^4x
推荐
化简sin^4x+sin^2xcos^2x+cos^2x=?(请写过程)
化简:cos^4x+sin^2xcos^2x+cos^2x
化简(sin^2x-cos^4x+cos^2x-sin^4x)/(sin^2x-cos^6x+cos^2x-sin^6x)
化简[1-(sin^4x-sin^2cos^2x+cos^4x)/(sin^2)]+3sin^2x
化简cos^4x+sin^2xcos^2x+sin^2x
如图,已知⊙O的半径为5cm,弦AB的长为8cm,P是AB延长线上一点,BP=2cm,则tan∠OPA等于( ) A.32 B.23 C.2 D.12
20分求Rixon这个词的念法,要音标!
用“立”组词并填空
猜你喜欢
若m,n互为倒数,则3m乘4n=
"这是我们今后要经常用到的交通工具.”用英语怎么翻译?
列举克隆羊诞生的过程
作文:风雨中这点痛算什么
数列与函数的结合啊.
求英语翻译>.
现有等底等高的圆柱和圆锥体容器各一个,将圆柱容器内装满水,再倒入空圆锥容器内,当圆柱容器内的水全部倒出时,结果溢出25.2毫升水,圆柱容器内原有水_毫升,这时圆锥容器里有水_
同义句1You look like your brother (同义句) You and your brother ____ ____ ____
© 2025 79432.Com All Rights Reserved.
电脑版
|
手机版