3−5+4−13-5+4-13−5+4−1
z=x2+y2z=\sqrt{x^2+y^2}z=x2+y2
n2−14+49n^2-14+49n2−14+49
∫(3x−1)3x2dx\int\frac{\left(3x-1\right)^{3}}{x^{2}}dx∫x2(3x−1)3dx
limx→π2(x−π2)cot(x)\lim_{x\to\frac{\pi}{2}}\left(x-\frac{\pi}{2}\right)\cot\left(x\right)x→2πlim(x−2π)cot(x)
−dydx+y=−x2−2x+9-\frac{dy}{dx}+y=-x^2-2x+9−dxdy+y=−x2−2x+9
(3xy+4z)2\left(3xy+4z\right)^2(3xy+4z)2
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