你如何区分cos(1-2x)^ 2?

你如何区分cos(1-2x)^ 2?
Anonim

回答:

#DY / DX = 4cos(1-2倍)SIN(1-2倍)#

说明:

首先,让我们 #cos(1-2倍)= U#

所以, #y的= U ^ 2#

#DY / DX =(DY)/(DU)*(DU)/(DX)#

#(DY)/(DU)= 2U#

#(DU)/(DX)= d / DX COS(1-2倍) = d / DX COS(V)#

#(DU)/(DX)=(DU)/(DV)*(DV)/(DX)#

#dy / dx =(dy)/(du)*(du)/(dv)*(dv)/(dx)#

#(DU)/(DV)= - SIN(v)的#

#(DV)/(DX)= - 2#

#DY / DX = 2U * -sin(v)的* - 2#

#DY / DX = 4usin(V)#

#DY / DX = 4cos(1-2倍)SIN(1-2倍)#