Y = 3sin(x) - sin(3x)的导数是多少?

Y = 3sin(x) - sin(3x)的导数是多少?
Anonim

#Y = 3sin(X)-sin(3×)#

#Y'= 3cosx- COS(3×)* 3# #COLOR(白色)(TTTTT# #“将链规则应用于”sin(3x)#

#Y'= 3(cosx-cos3x)#

回答:

#DY / DX = 3cosx-3cos3x#

说明:

#“区分”sin3x“使用”颜色(蓝色)“链规则”#

#“给定”y = f(g(x))“然后”#

#dy / dx = f'(g(x))xxg'(x)larrcolor(蓝色)“链规则”#

#Y = 3sinx-sin3x#

#rArrdy / dx = 3cosx-cos3x xxd / dx(3x)#

#COLOR(白色)(rArrdy / DX)= 3cosx-3cos3x#