> 数学 >
为什么y=√3cosx+sinx=2sin(x+π/3)
人气:483 ℃ 时间:2020-03-29 02:00:11
解答
y=2(√3/2cosx+1/2sinx)
=2(sinπ/3cosx+cosπ/3sinx)
=2sin(x+π/3)
推荐
猜你喜欢
© 2026 79432.Com All Rights Reserved.
电脑版|手机版