1, Find the maximum value of (sinθ+cosθ)^4
2.(A) show that sinθ+cosθ=(開方2)sin(θ+兀/4)
(b) find the maximum and minimum values of (sinθ+cosθ-1)^2
3. solve tan2x+tanx=0 for 0<=x<=兀
thank you!
收錄日期: 2021-04-23 23:22:56
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20110310000051KK00918