User talk:Ongmingcong

Inline Equations
Question 1

$\partial_t U = A U + B \left({U}\right)$

Displayed Equations
Question 1


 * $\displaystyle H \left({U}\right) = \int_0^{2 \pi} \frac {\left({\partial_x u}\right)^2} 2 + \frac {v^2} 2 - F \left({u}\right) \ \mathrm d x$

Big Operators
Question 1:

$\displaystyle \sum_{i \mathop = 1}^n$

Question 2:

$\displaystyle \frac {-b \pm \sqrt {b^2 - 4ac}} {2 a}$

Calculus
$\dfrac {\mathrm d y} {\mathrm d x}$