f(x)=cos^X+sinXcosX怎么化简?
问题描述:
f(x)=cos^X+sinXcosX怎么化简?
答
=(1+cos2x)/2+sin2x/2=根号2/2 sin(2x+pi/4)+1/2
f(x)=cos^X+sinXcosX怎么化简?
=(1+cos2x)/2+sin2x/2=根号2/2 sin(2x+pi/4)+1/2