NumMethodsPDEs

[math]\displaystyle{ Au_xx + Bu_xy + Cu_yy + Du_x + Eu_y + Fu = G }[/math]

[math]\displaystyle{ f(x + h) = f(x) + \frac{f'(x)}{1!}h + \frac{f^{(2)}(x)}{2!}h^2 + \cdots + \frac{f^{(n)}(x)}{n!}h^n + R_n(x) }[/math]