# Tag Info

Could you please be more specific with your question and post the text here? This will be more helpful for other people visiting the site. Now as far as to where the 1/2 went, usually people put 1/2 in front of the second order term because this will simplify to 1 after the derivation: $$\frac{\partial x^2}{\partial x} = 2x$$ vs  \frac{1}{2} \cdot ...