Khai triển Maclaurin của sin x đến x4

\[{\rm{x}} - \frac{{{{\rm{x}}^3}}}{6} + {\rm{o}}({{\rm{x}}^4})\]

\[{\rm{x}} + \frac{{{{\rm{x}}^3}}}{6} + {\rm{o}}({{\rm{x}}^4})\]

\[{\rm{x}} - \frac{{{{\rm{x}}^3}}}{6} + \frac{{{{\rm{x}}^5}}}{{120}} + {\rm{o}}({{\rm{x}}^4})\]

\[{\rm{x}} + \frac{{{{\rm{x}}^3}}}{6} - \frac{{{{\rm{x}}^5}}}{{120}} + {\rm{o}}({{\rm{x}}^4})\]