什麼是雙曲函數:sinh,cosh,tanh
回答 (1)
2006-12-01 6:47 pm
✔ 最佳答案
sinh(x)=(e^x-e^(-x))/2cosh(x)=(e^x+e^(-x))/2
tanh(x)=sinh(x)/cosh(x)
d(sinh(x)/dx=cosh(x)
d(cosh(x)/dx=sinh(x)
....
cosh(x)^2-sinh(x)^2=1
So there are many similarities with the trigonometric functions.
For details, see:
http://zh.wikipedia.org/wiki/%E5%8F%8C%E6%9B%B2%E5%87%BD%E6%95%B0
收錄日期: 2021-04-12 20:08:45
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20061130000051KK04990