246−2−4−6123−1−2−3−4
2π
3π2
π
π2
π2
π
3π2
2π
y=cos(ax)
a = 1.0
=cos(x)
y=bsin2(x)+ccos2(x)+d
b = 1.0
c = 1.0
d = 1.0
=sin2(x)+cos2(x)+1
y=cos(x)
y=sin2(x)+cos2(x)+1