$\frac{1}{2}{f}^2\left(x\right)$

$\frac{1}{2}$ \frac{1}{2}{x}^2$x^2$

$\frac{1}{2} \left[{\left\{f\left(x\right)\right\}}^{2 }-\left\{f{\left(0\right)}^2\right\}\right]$

$f\left(x\right) - f\left(0\right)$

$\frac{1}{2}{f}^2\left(x\right)$

$\frac{1}{2}$ \frac{1}{2}{x}^2$x^2$

$\frac{1}{2} \left[{\left\{f\left(x\right)\right\}}^{2 }-\left\{f{\left(0\right)}^2\right\}\right]$

$f\left(x\right) - f\left(0\right)$

$\frac{1}{2}{f}^2\left(x\right)$

$\frac{1}{2}$ \frac{1}{2}{x}^2$x^2$

$\frac{1}{2} \left[{\left\{f\left(x\right)\right\}}^{2 }-\left\{f{\left(0\right)}^2\right\}\right]$

$f\left(x\right) - f\left(0\right)$

$\frac{1}{2}{f}^2\left(x\right)$

$\frac{1}{2}$ \frac{1}{2}{x}^2$x^2$

$\frac{1}{2} \left[{\left\{f\left(x\right)\right\}}^{2 }-\left\{f{\left(0\right)}^2\right\}\right]$

$f\left(x\right) - f\left(0\right)$

$\frac{1}{2}{f}^2\left(x\right)$

$\frac{1}{2}$ \frac{1}{2}{x}^2$x^2$

$\frac{1}{2} \left[{\left\{f\left(x\right)\right\}}^{2 }-\left\{f{\left(0\right)}^2\right\}\right]$

$f\left(x\right) - f\left(0\right)$

$\frac{1}{2}{f}^2\left(x\right)$

$\frac{1}{2}$ \frac{1}{2}{x}^2$x^2$

$\frac{1}{2} \left[{\left\{f\left(x\right)\right\}}^{2 }-\left\{f{\left(0\right)}^2\right\}\right]$

$f\left(x\right) - f\left(0\right)$

$\frac{1}{2}{f}^2\left(x\right)$

$\frac{1}{2}$ \frac{1}{2}{x}^2$x^2$

$\frac{1}{2} \left[{\left\{f\left(x\right)\right\}}^{2 }-\left\{f{\left(0\right)}^2\right\}\right]$

$f\left(x\right) - f\left(0\right)$

$\frac{1}{2}{f}^2\left(x\right)$

$\frac{1}{2}$ \frac{1}{2}{x}^2$x^2$

$\frac{1}{2} \left[{\left\{f\left(x\right)\right\}}^{2 }-\left\{f{\left(0\right)}^2\right\}\right]$

$f\left(x\right) - f\left(0\right)$

$\frac{1}{2}{f}^2\left(x\right)$

$\frac{1}{2}$ \frac{1}{2}{x}^2$x^2$

$\frac{1}{2} \left[{\left\{f\left(x\right)\right\}}^{2 }-\left\{f{\left(0\right)}^2\right\}\right]$

$f\left(x\right) - f\left(0\right)$

$\frac{1}{2}{f}^2\left(x\right)$

$\frac{1}{2}$ \frac{1}{2}{x}^2$x^2$

$\frac{1}{2} \left[{\left\{f\left(x\right)\right\}}^{2 }-\left\{f{\left(0\right)}^2\right\}\right]$

$f\left(x\right) - f\left(0\right)$

$\frac{1}{2}{f}^2\left(x\right)$

$\frac{1}{2}$ \frac{1}{2}{x}^2$x^2$

$\frac{1}{2} \left[{\left\{f\left(x\right)\right\}}^{2 }-\left\{f{\left(0\right)}^2\right\}\right]$

$f\left(x\right) - f\left(0\right)$

$\frac{1}{2}{f}^2\left(x\right)$

$\frac{1}{2}$ \frac{1}{2}{x}^2$x^2$

$\frac{1}{2} \left[{\left\{f\left(x\right)\right\}}^{2 }-\left\{f{\left(0\right)}^2\right\}\right]$

$f\left(x\right) - f\left(0\right)$

$\frac{1}{2}{f}^2\left(x\right)$

$\frac{1}{2}$ \frac{1}{2}{x}^2$x^2$

$\frac{1}{2} \left[{\left\{f\left(x\right)\right\}}^{2 }-\left\{f{\left(0\right)}^2\right\}\right]$

$f\left(x\right) - f\left(0\right)$

$\frac{1}{2}{f}^2\left(x\right)$

$\frac{1}{2}$ \frac{1}{2}{x}^2$x^2$

$\frac{1}{2} \left[{\left\{f\left(x\right)\right\}}^{2 }-\left\{f{\left(0\right)}^2\right\}\right]$

$f\left(x\right) - f\left(0\right)$

$\frac{1}{2}{f}^2\left(x\right)$

$\frac{1}{2}$ \frac{1}{2}{x}^2$x^2$

$\frac{1}{2} \left[{\left\{f\left(x\right)\right\}}^{2 }-\left\{f{\left(0\right)}^2\right\}\right]$

$f\left(x\right) - f\left(0\right)$

$\frac{1}{2}{f}^2\left(x\right)$

$\frac{1}{2}$ \frac{1}{2}{x}^2$x^2$

$\frac{1}{2} \left[{\left\{f\left(x\right)\right\}}^{2 }-\left\{f{\left(0\right)}^2\right\}\right]$

$f\left(x\right) - f\left(0\right)$

$\frac{1}{2}{f}^2\left(x\right)$

$\frac{1}{2}$ \frac{1}{2}{x}^2$x^2$

$\frac{1}{2} \left[{\left\{f\left(x\right)\right\}}^{2 }-\left\{f{\left(0\right)}^2\right\}\right]$

$f\left(x\right) - f\left(0\right)$

$\frac{1}{2}{f}^2\left(x\right)$

$\frac{1}{2}$ \frac{1}{2}{x}^2$x^2$

$\frac{1}{2} \left[{\left\{f\left(x\right)\right\}}^{2 }-\left\{f{\left(0\right)}^2\right\}\right]$

$f\left(x\right) - f\left(0\right)$

$\frac{1}{2}{f}^2\left(x\right)$

$\frac{1}{2}$ \frac{1}{2}{x}^2$x^2$

$\frac{1}{2} \left[{\left\{f\left(x\right)\right\}}^{2 }-\left\{f{\left(0\right)}^2\right\}\right]$

$f\left(x\right) - f\left(0\right)$

$\frac{1}{2}{f}^2\left(x\right)$

$\frac{1}{2}$ \frac{1}{2}{x}^2$x^2$

$\frac{1}{2} \left[{\left\{f\left(x\right)\right\}}^{2 }-\left\{f{\left(0\right)}^2\right\}\right]$

$f\left(x\right) - f\left(0\right)$

$\frac{1}{2}{f}^2\left(x\right)$

$\frac{1}{2}$ \frac{1}{2}{x}^2$x^2$

$\frac{1}{2} \left[{\left\{f\left(x\right)\right\}}^{2 }-\left\{f{\left(0\right)}^2\right\}\right]$

$f\left(x\right) - f\left(0\right)$

$\frac{1}{2}{f}^2\left(x\right)$

$\frac{1}{2}$ \frac{1}{2}{x}^2$x^2$

$\frac{1}{2} \left[{\left\{f\left(x\right)\right\}}^{2 }-\left\{f{\left(0\right)}^2\right\}\right]$

$f\left(x\right) - f\left(0\right)$

$\frac{1}{2}{f}^2\left(x\right)$

$\frac{1}{2}$ \frac{1}{2}{x}^2$x^2$

$\frac{1}{2} \left[{\left\{f\left(x\right)\right\}}^{2 }-\left\{f{\left(0\right)}^2\right\}\right]$

$f\left(x\right) - f\left(0\right)$

$\frac{1}{2}{f}^2\left(x\right)$

$\frac{1}{2}$ \frac{1}{2}{x}^2$x^2$

$\frac{1}{2} \left[{\left\{f\left(x\right)\right\}}^{2 }-\left\{f{\left(0\right)}^2\right\}\right]$

$f\left(x\right) - f\left(0\right)$

$\frac{1}{2}{f}^2\left(x\right)$

$\frac{1}{2}$ \frac{1}{2}{x}^2$x^2$

$\frac{1}{2} \left[{\left\{f\left(x\right)\right\}}^{2 }-\left\{f{\left(0\right)}^2\right\}\right]$

$f\left(x\right) - f\left(0\right)$

$\frac{1}{2}{f}^2\left(x\right)$

$\frac{1}{2}$ \frac{1}{2}{x}^2$x^2$

$\frac{1}{2} \left[{\left\{f\left(x\right)\right\}}^{2 }-\left\{f{\left(0\right)}^2\right\}\right]$

$f\left(x\right) - f\left(0\right)$

$\frac{1}{2}{f}^2\left(x\right)$

$\frac{1}{2}$ \frac{1}{2}{x}^2$x^2$

$\frac{1}{2} \left[{\left\{f\left(x\right)\right\}}^{2 }-\left\{f{\left(0\right)}^2\right\}\right]$

$f\left(x\right) - f\left(0\right)$

$\frac{1}{2}{f}^2\left(x\right)$

$\frac{1}{2}$ \frac{1}{2}{x}^2$x^2$

$\frac{1}{2} \left[{\left\{f\left(x\right)\right\}}^{2 }-\left\{f{\left(0\right)}^2\right\}\right]$

$f\left(x\right) - f\left(0\right)$

$\frac{1}{2}{f}^2\left(x\right)$

$\frac{1}{2}$ \frac{1}{2}{x}^2$x^2$

$\frac{1}{2} \left[{\left\{f\left(x\right)\right\}}^{2 }-\left\{f{\left(0\right)}^2\right\}\right]$

$f\left(x\right) - f\left(0\right)$

$\frac{1}{2}{f}^2\left(x\right)$

$\frac{1}{2}$ \frac{1}{2}{x}^2$x^2$

$\frac{1}{2} \left[{\left\{f\left(x\right)\right\}}^{2 }-\left\{f{\left(0\right)}^2\right\}\right]$

$f\left(x\right) - f\left(0\right)$

$\frac{1}{2}{f}^2\left(x\right)$

$\frac{1}{2}$ \frac{1}{2}{x}^2$x^2$

$\frac{1}{2} \left[{\left\{f\left(x\right)\right\}}^{2 }-\left\{f{\left(0\right)}^2\right\}\right]$

$f\left(x\right) - f\left(0\right)$

$\frac{1}{2}{f}^2\left(x\right)$

$\frac{1}{2}$ \frac{1}{2}{x}^2$x^2$

$\frac{1}{2} \left[{\left\{f\left(x\right)\right\}}^{2 }-\left\{f{\left(0\right)}^2\right\}\right]$

$f\left(x\right) - f\left(0\right)$

$\frac{1}{2}{f}^2\left(x\right)$

$\frac{1}{2}$ \frac{1}{2}{x}^2$x^2$

$\frac{1}{2} \left[{\left\{f\left(x\right)\right\}}^{2 }-\left\{f{\left(0\right)}^2\right\}\right]$

$f\left(x\right) - f\left(0\right)$

$\frac{1}{2}{f}^2\left(x\right)$

$\frac{1}{2}$ \frac{1}{2}{x}^2$x^2$

$\frac{1}{2} \left[{\left\{f\left(x\right)\right\}}^{2 }-\left\{f{\left(0\right)}^2\right\}\right]$

$f\left(x\right) - f\left(0\right)$