e−2xy′=2y2e^{-2x}y'=2y^2e−2xy′=2y2
15≤3−4n15\le3-4n15≤3−4n
3x−8>4x−153x-8>4x-153x−8>4x−15
limx→0(x−sin(x)1−cos(2x))\lim_{x\to0}\left(\frac{x-sin\left(x\right)}{1-cos\left(2x\right)}\right)x→0lim(1−cos(2x)x−sin(x))
−81+81a2-81+81a^2−81+81a2
dydx f′(x)=15x+1\frac{dy}{dx}\:f'\left(x\right)=15x+1dxdyf′(x)=15x+1
−7+4x=−19-7+4x=-19−7+4x=−19
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