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y'=﹣2sin(2x﹣1) y'=﹣2cos(2x﹣1) y'=﹣sin(2x﹣1) y'=﹣cos(2x﹣1)
y=x y=﹣2x﹣1 y=2x﹣1 y=1﹣2x
y'=e-2x y'=-e-2x y'=-2e-2x y'=-2xe-2x
-3x2y·5x2y=2x2y -2x2y3·2x3y=-2x5y4 35x3y2÷5x2y=7xy (-2x-y)(2x+y)=4x2-y2
y=2x -1 y=2x +1 y=2 (x -1) y=2 (x +1)
y=2x2+2x+12 y=2x2-2x+12 y=2x2+2x-12 y=2x2-2x-12
(2x﹣3y)(2x+3y) (2x﹣3y)(﹣2x+3y) (2x﹣3y)(﹣2x﹣3y) (﹣2x+3y)(2x+3y)
3x2+2x2=5x 4 (-x2)3=-x 6 (2x2y)2=2x4y2 (x+y2)2=x2+y4
y=2x+2 y=2x﹣6 y=2x﹣4 y=2(x+3)
y′=2xcos 2x-x2sin 2x y′=2xcos 2x-2x2sin 2x y′=x2cos 2x-2xsin 2x y′=2xcos 2x+2x2sin 2x
(4x-3y)(-3y-4x) (2x2-y2)(2x2+y2) (a+b-c)(-c-b+a) (-x+y)(x-y)
x2+x2=x4 x2+x3=2x5 3x﹣2x=1 x2y﹣2x2y=﹣x2y
y=2x y=-2x+4 y=2x或y=-2x+4 y=-2x或y=2x+4