3.75⋅153.75\cdot153.75⋅15
dydx+lnxy=0\frac{dy}{dx}+\frac{lnx}{y}=0dxdy+ylnx=0
(a2−1)2+(a2−1)−12\left(a^2-1\right)^2+\left(a^2-1\right)-12(a2−1)2+(a2−1)−12
5−20⋅55-20\cdot55−20⋅5
limx→0(sin2x−tan2xx3)2\lim_{x\to0}\left(\frac{sin2x-tan2x}{x^3}\right)^2x→0lim(x3sin2x−tan2x)2
x2−14x+40x^2-14x+40x2−14x+40
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