求下列函数的单调区间(1)y=sin(x+π/4) (2)y=3cosx+1
1个回答
展开全部
1 2kπ-π/2<=x+π/4<=2kπ+π/2 得函数的增区间为2kπ-3π/4<=x<=2kπ+π/4
2kπ+π/2<=x+π4<=2kπ+3π/2 的函数的减区间为2kπ+π/4<=x<=2kπ+5π/4
2 增区间为2kπ-π<=x<=2kπ
减区间为2kπ<=x<=2kπ+π
2kπ+π/2<=x+π4<=2kπ+3π/2 的函数的减区间为2kπ+π/4<=x<=2kπ+5π/4
2 增区间为2kπ-π<=x<=2kπ
减区间为2kπ<=x<=2kπ+π
本回答由提问者推荐
已赞过
已踩过<
评论
收起
你对这个回答的评价是？
推荐律师服务：
若未解决您的问题，请您详细描述您的问题，通过百度律临进行免费专业咨询
