find the rate of change (dy/dx) of each function when t=1.2 (Radian for sin, cos sec and tan)
y = 6sin(t/2) + 3cos (t/2)
ans:1.6290
plz show your step
一條唔係好明既數學問題
2007-01-02 1:02 am
回答 (1)
2007-01-02 1:09 am
✔ 最佳答案
dy/dt=6cos(t/2)(1/2)-3sin(t/2)(1/2)
=3cos(t/2)-(3/2)sin(t/2)
Therefore,
dy/dt│t=1.2
=3cos0.6-(3/2)sin0.6
=1.6290
收錄日期: 2021-04-25 17:18:06
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070101000051KK03284