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## Some Simple Displayed Formulas:

The character is for superscripts and is for subscripts. Single character subscripts don't need to be enclosed in .

                e^{ i \theta_1} = \cos{\theta_1} + i \sin{\theta_1}


                $\frac{\partial^2 u}{\partial x^2}= \frac{1}{c^2} \frac{\partial^2 u}{\partial t^2}$


Sometimes it is important not to leave a blank line before the ending a math mode display.

Formulas can also be displayed inline by enclosing in $signs; e.g. . $f(x) =\frac{d}{dx} \int_a^x f(t) \ dt\$


root
2002-09-19