f(x)=2sin(x+a/2)cos(x+a/2)+2根号3 cos²(x+a/2)-根号3 如何化简?
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/27 18:00:48
![f(x)=2sin(x+a/2)cos(x+a/2)+2根号3 cos²(x+a/2)-根号3 如何化简?](/uploads/image/z/638063-71-3.jpg?t=f%28x%29%3D2sin%28x%2Ba%2F2%29cos%28x%2Ba%2F2%29%2B2%E6%A0%B9%E5%8F%B73+cos%26%23178%3B%EF%BC%88x%2Ba%2F2%EF%BC%89-%E6%A0%B9%E5%8F%B73+%E5%A6%82%E4%BD%95%E5%8C%96%E7%AE%80%3F)
x)KӨд5*ӨN7L/-PLM=0ɧ˚gu
6IE6RΆ&|Ա A# [\M[CmzG[(u!ڏ:fG#
)FцF*T 7#ʀ`*a
A6yvx Q
f(x)=2sin(x+a/2)cos(x+a/2)+2根号3 cos²(x+a/2)-根号3 如何化简?
f(x)=2sin(x+a/2)cos(x+a/2)+2根号3 cos²(x+a/2)-根号3 如何化简?
f(x)=2sin(x+a/2)cos(x+a/2)+2根号3 cos²(x+a/2)-根号3 如何化简?
∵2sin(x+a/2)cos(x+a/2)=sin(2x+a)
2 cos²(x+a/2)=1+cos(2x+a)
∴f(x)=2sin(x+a/2)cos(x+a/2)+2根号3 cos²(x+a/2)-根号3
=sin(2x+a)+√3[1+cos(2x+a)]-√3
=sin(2x+a)+√3cos(2x+a)
=2[1/2sin(2x+a)+√3/2*cos(2x+a)]
=2[sin(2x+a)cosπ/3+cos(2x+a)sinπ/3]
=2sin(2x+a+π/3)
f(x)=cos(2x)+2sin(x)化简
f'(sin^2x)=cos^2x,求f(x)f'((sin^x)^2)=(cos^x)^2
当x=a时,f(x)=sin x - 2cos x取得最大值,则cos a =?
如果f(x)=sin(x+a)+2cos(x+a)是奇函数,则tana=?
f(x)=sin(x+a)-2cos(x-a)是偶函数求cos2a
f(x)=a(cos^2 x+sin xcos x)+b,求当a
函数f(x)=√a*cos(2x-θ)-sin(2x-θ)(0
f(x)为奇函数,x>0,f(x)=sin 2x+cos x,则x
函数f(x)=负根号3sin ^2x+sin x cos x f(a/2)=1/4-根号3/2求sin a值
f(sin x)=3-cos 2x,求f(cos x)=?
设f(sin x)=3-cos 2x,则f(cos x)=?
若F(sin x)=3-cos 2x 则F(cos x)=?
f(sin x)=cos 2x +1 求 f(cos x)
f(sin x)=3-cos 2x求f(cos x)
f(cos x)=2-sin 2x,则f(sin x)=?
f(x)=2sin(x+a/2)cos(x+a/2)+2根号3cos^2(x+a/2)-根号3求f(x)周期若0
已知f(x)=cos(x/2)[sin(x/2)-cos(x/2)],其导为?
f(x)=cos(2兀-x)cos(2/兀-x)-sin方x化简速求