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y'=﹣2sin（2x﹣1） y'=﹣2cos（2x﹣1） y'=﹣sin（2x﹣1） y'=﹣cos（2x﹣1）
Int((Cos(Y)+0.5)*1000)/000 Int(Cos(Y*1000))/1000+0.5 Int(Cos(Y)*1000+0.5)/1000 Int(Cos(Y*1000+0.5)/1000
y＝|sin x| y＝sin|x| y＝|cos x| y＝cos|x|
Int((Cos(+0.5)*1000)/000 Int(Cos(Y*1000))/1000+0.5 Int(Cos(*1000+0.5)/1000 Int(Cos(Y*1000+0.5)/1000
y=c1x-cos x+c2 y=x-cos x y=c1x+cos x+c2 y=x+cos x
A、X=a*Sino；Y=b*Cose B、X=b*Cos（。／；Y=a*Sino C、x=a*Cose；Y=b*SinO D、X=b*Sino；Y=a*Cos（o/
y=c1x-cos x+c2 y=x-cos x y=c1x+cos x+c2 y=x+cox x
y=cos2x+2． y=cos2x+1． y=2cosx． y=2cos2x．
X=x′cosα+y′SinαY=x′Sinα-y′cosα X=x′cosα-y′SinαY=x′Sinα+y′cosα X=x′cosα+y′SinαY=x′Sinα+y′cosα X=x′cosα+y′SinαY=x′Sinα+y′cosα
exy[xsin(x+y)-cos(x+y)] exy[xsin(x+y)+cos(x+y)] exy[xsinxy+cos(x+y)] exy[ysin(x+y)+xcos(x+y)]
yp=2cos（4πt-x）m yp=2cos（4πt-π/2）m yp=2cos（4πct+π）m yp=2cos4xπtm
y=ρcosθ,x=ρsinθ x=ρcosθ,y=ρsinθ y=ρcotθ,x=ρtgθ x=ρcotθ,y=ρtgθ
y(t)=(11／EI)cos
y(t)=(4mg／3EI)cos y(t)=(11／EI)cos
y(t)=(4mg／3EI)cos
y＝sin x y＝cos x y＝sin 2x y＝cos 2x
X=a*sin θ;Y=b*COSθ X=b*cos( θ/b),Y=a*sin θ X=a*COSθ;Y=b*sin θ X=b*sin θ;Y=a*cos θ
exy[xsin(x+y)-cos(x+y)] exy[xsin(x+y)+cos(x+y)] exy[xsinxy+cos(x+y)] exy[ysin(x+y)+xcos(x+y)]
y＝cos 2x＋sin 2x y＝cos 2x－sin 2x y＝sin 2x－cos 2x y＝sin xcos x
exy[xsin(x+y)-cos(x+y)] exy[xsin(x+y)+cos(x+y)] exy[xsinxy+cos(x+y)] exy[ysin(x+y)+xcos(x+y)]
y=csin x y=ccos x y=cos x y=cos x
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