> 数学 >
cos2x+sin2x变成√2×sin(2x+π/4)
打漏了,cos2x+sin2x变成√2×sin(2x+π/4)的过程
人气:102 ℃ 时间:2020-05-10 22:55:03
解答
cos2x+sin2x
=√2(√2/2*cos2x+√2/2*sin2x)
=√2(sinπ/4*cos2x +cosnπ/4*sin2x)
=√2sin(2x+π/4)
推荐
猜你喜欢
© 2024 79432.Com All Rights Reserved.
电脑版|手机版