sinx变为sin(2x+π/2)怎么变?
怎么把y=sinx的图像变为y=sin(2x+π/4)的图像,两个答案
sin^2X-sinx+3怎么化简,过程,谢谢了(sin^2X是SINx的平方)
|sin(x+π/2)|-|sinx|求导过程?
cosX+sinX=根号2sin(X+π/4)是怎么推出来的,
2sin(x-π/4)sin(x+π/4)=(sinx-cosx)(sinx+cosx)=-cos2a
化简f(x)=4sinx*sin^2((π+2x)/4)+(cosx+sinx)(cosx-sinx)
f(x)=cos(2x-π/3)+2sin(x-π/4)怎么化简成(sinx-cosx)(sinx+cosx)
sin²x/2+2sinx/2-sinx-4cosx/2=0,怎么变成(sinx/2-2cosx/2)(sin
将y=Sinx变换成y=2Sin(2x-兀/2):保持横坐标不变,纵坐标变为原来的2倍;横坐标向右平移兀/2个单
Sin^x怎么变化成 1-cos(2x) /2
已知函数f(x)=sin(π/2-x)+sinx
函数f(x)=3sinx+sin(π2+x)