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{| class="wikitable" border="1" style="text-align: center; width: 800px;" | {| class="wikitable" border="1" style="text-align: center; width: 800px;" | ||
| − | |+ Commands helpful while doing the practice problems | + | |+ Commands helpful while doing the practice problems |
|- style="height: 40px;" | |- style="height: 40px;" | ||
! scope="col" | Description | ! scope="col" | Description | ||
| Line 30: | Line 30: | ||
| \sum_{k=0}^\infty x[n]\delta [n-k] | | \sum_{k=0}^\infty x[n]\delta [n-k] | ||
|- style="height: 30px;" | |- style="height: 30px;" | ||
| − | | ''Fractions'' | + | | ''Fractions'' |
| − | | <math>y=x^2/2 +\frac{x}{\phi}</math> | + | | <math>y=x^2/2 +\frac{x}{\phi}</math> |
| − | |y=x^2/2 +\frac{x}{\phi} | + | | y=x^2/2 +\frac{x}{\phi} |
|- style="height: 30px;" | |- style="height: 30px;" | ||
| − | |''Integrals'' | + | | ''Integrals'' |
| − | |<math>\int\limits_{\alpha}^{\beta}e^\tau\ d\tau</math> | + | | <math>\int\limits_{\alpha}^{\beta}e^\tau\ d\tau</math> |
| − | |\int\limits_{\alpha}^{\beta}e^\tau\ d\tau | + | | \int\limits_{\alpha}^{\beta}e^\tau\ d\tau |
|- style="height: 30px;" | |- style="height: 30px;" | ||
| − | |''Braces and Script Characters'' | + | | ''Braces and Script Characters'' |
| − | |<math>\mathcal{F }\left \{ rect(t) \right \}, \mathcal{X}(\omega)</math> | + | | <math>\mathcal{F }\left \{ rect(t) \right \}, \mathcal{X}(\omega)</math> |
| − | |\mathcal{F }\left \{ rect(t) \right \}, \mathcal{X}(\omega) | + | | \mathcal{F }\left \{ rect(t) \right \}, \mathcal{X}(\omega) |
| − | + | ||
|} | |} | ||
| − | + | <br> | |
{| class="wikitable" border="1" style="text-align: center; width: 800px;" | {| class="wikitable" border="1" style="text-align: center; width: 800px;" | ||
| − | |+ How to Format a Long Equation | + | |+ How to Format a Long Equation |
| − | ! scope="col" | What it looks like | + | |- |
| + | ! scope="col" | What it looks like | ||
! scope="col" | What you type | ! scope="col" | What you type | ||
|- | |- | ||
| − | |<math>\begin{align} | + | | <math>\begin{align} |
| − | f(x) &= \int\limits_{0}^{2\pi} sin^2(\theta) \ d\theta \\ &= \int\limits_{0}^{2\pi} \big(1-cos^2(\theta) \big)\ d\theta \\ &= \int\limits_{0}^{2\pi} \bigg( 1-\Big(\frac{1}{2} +\frac{1}{2} cos(2\theta)\Big) \bigg)\ d\theta \\ &= \int\limits_{0}^{2\pi} \frac{1}{2}\ d\theta -\frac{1}{2} \int\limits_{0}^{2\pi} cos(2\theta) \ d\theta \\ &= \pi \end{align}</math> | + | f(x) &= \int\limits_{0}^{2\pi} sin^2(\theta) \ d\theta \\ &= \int\limits_{0}^{2\pi} \big(1-cos^2(\theta) \big)\ d\theta \\ &= \int\limits_{0}^{2\pi} \bigg( 1-\Big(\frac{1}{2} +\frac{1}{2} cos(2\theta)\Big) \bigg)\ d\theta \\ &= \int\limits_{0}^{2\pi} \frac{1}{2}\ d\theta -\frac{1}{2} \int\limits_{0}^{2\pi} cos(2\theta) \ d\theta \\ &= \pi \end{align}</math> |
| − | | <nowiki>\begin{align} | + | | <nowiki>\begin{align} </nowiki> \\ |
| − | f(x) &= \int\limits_{0}^{2\pi} sin^2(\theta) \ d\theta \\ | + | <nowiki> f(x) &= \int\limits_{0}^{2\pi} sin^2(\theta) \ d\theta \\ </nowiki> <br> |
| − | + | <nowiki>&= \int\limits_{0}^{2\pi} \big(1-cos^2(\theta) \big)\ d\theta \\ </nowiki> <br> | |
| − | &= \int\limits_{0}^{2\pi} \bigg( 1-\Big(\frac{1}{2} +\frac{1}{2} cos(2\theta)\Big) \bigg)\ d\theta \\ | + | <nowiki>&= \int\limits_{0}^{2\pi} \bigg( 1-\Big(\frac{1}{2}</nowiki> +<br> <nowiki>\frac{1}{2} cos(2\theta)\Big) \bigg)\ d\theta \\ </nowiki> <br> |
| − | + | <nowiki> &= \int\limits_{0}^{2\pi} \frac{1}{2}\ d\theta</nowiki> -<br> <nowiki>\frac{1}{2} \int\limits_{0}^{2\pi} cos(2\theta) \ d\theta \\ </nowiki> <br> | |
| − | &= \pi \end{align}</nowiki> | + | <nowiki>&= \pi \end{align}</nowiki> |
|} | |} | ||
Revision as of 15:10, 2 September 2011
How to Enter Math in Rhea
This page shows many of the functions and symbols that you are likely to need while working on the practice problems. *hint hint
Basics of Rhea/Wiki Math
Math in Rhea is written using the Latex commands. To begin, you need use the math tags like: <math> formulas </math>.
Resources
You should know that there is a host of resources already to help you along. One great page on Rhea is How to type Math Equations. Another resource is Wikipedia's page on Functions, Symbols, and Special Characters.
| Description | What it looks like | What you type |
|---|---|---|
| Summations | $ \sum_{n=-\infty}^\infty x[n]e^{-j2\pi f} $ | \sum_{n=-\infty}^\infty x[n]e^{-j2\pi f} |
| Summations with Delta | $ \sum_{k=0}^\infty x[n]\delta [n-k] $ | \sum_{k=0}^\infty x[n]\delta [n-k] |
| Fractions | $ y=x^2/2 +\frac{x}{\phi} $ | y=x^2/2 +\frac{x}{\phi} |
| Integrals | $ \int\limits_{\alpha}^{\beta}e^\tau\ d\tau $ | \int\limits_{\alpha}^{\beta}e^\tau\ d\tau |
| Braces and Script Characters | $ \mathcal{F }\left \{ rect(t) \right \}, \mathcal{X}(\omega) $ | \mathcal{F }\left \{ rect(t) \right \}, \mathcal{X}(\omega) |
| What it looks like | What you type |
|---|---|
| $ \begin{align} f(x) &= \int\limits_{0}^{2\pi} sin^2(\theta) \ d\theta \\ &= \int\limits_{0}^{2\pi} \big(1-cos^2(\theta) \big)\ d\theta \\ &= \int\limits_{0}^{2\pi} \bigg( 1-\Big(\frac{1}{2} +\frac{1}{2} cos(2\theta)\Big) \bigg)\ d\theta \\ &= \int\limits_{0}^{2\pi} \frac{1}{2}\ d\theta -\frac{1}{2} \int\limits_{0}^{2\pi} cos(2\theta) \ d\theta \\ &= \pi \end{align} $ | \begin{align} \\
f(x) &= \int\limits_{0}^{2\pi} sin^2(\theta) \ d\theta \\ &= \pi \end{align}
|
