The middle term of \({\left( {1 - \frac{{{x^2}}}{2}} \right)^{14}}\) is
1
\( - \frac{{423}}{{16}}{x^{13}}\)
2
\( - \frac{{429}}{{16}}{x^{16}}\)
3
\( - \frac{{429}}{{16}}{x^{14}}\)
4
\( - \frac{{423}}{{16}}{x^{14}}\)
The middle term of \({\left( {1 - \frac{{{x^2}}}{2}} \right)^{14}}\) is