請問這題應該怎麼算?
f(x)=2sinx-cosx。若f(a)=0,f(b)=1且0<=a,b<= π/2
則sin(b-a)=?
收錄日期: 2021-04-23 23:28:54
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20130624000016KK05150