【简答题】![](https://cos-cdn.shuashuati.com/shuashuati-wap/asset/rightlogo.png)
试证若z=z+iy,试证: (1)sin z=sin x.cosh y+icos x.sinh y; (2)cos z=cos x.cosh y—isin x.sin
若z=z+iy,试证: (1)sin z=sin x.cosh y+icos x.sinh y; (2)cos z=cos x.cosh y—isin x.sinh y; (3)|sin z|2=sin2 x+sinh2 y; (4)|cos z|2=cos2 x+sinh2 y.
举报
参考答案:
![](https://cos-cdn.shuashuati.com/shuashuati-wap/asset/rightlogo.png)
参考解析:
![](https://cos-cdn.shuashuati.com/shuashuati-wap/asset/rightlogo.png)
举一反三
![](https://cos-cdn.shuashuati.com/shuashuati-wap/asset/rightlogo.png)