# Tag Info

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The Basics Inline equations are surrounded by dollar signs; $\sin(x)$ gives $\sin(x)$. Equations on their own line are surrounded by double dollar signs; $$\tan(\theta)=o/a$$ gives $$\tan(\theta)=o/a$$ Subscripts and superscripts are denoted by the _ and ^ operators; E_i^2 gives $E_i^2$ Brackets can be used to extend the influence of operators over multiple ...

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When to Use MathJax The most common reason to use MathJax is to make a formula or expression easy to read. One such example is the Navier-Stokes equation for incompressible flow: $$\dfrac {\partial \mathbf u} {\partial t} + \mathbf u \cdot \nabla \mathbf u - \nu \nabla ^2 \mathbf u = - \nabla w + \mathbf g$$ The partial derivatives, nablas and large ...

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The best way to get a high-quality answer is with a clear, interesting and well-researched question. We recognize that our users come from a wide range of age groups, cultures, engineering disciplines, and experience levels. At a minimum, your question should: Clearly describe the problem, using diagrams, equations, specifications, etc. Share the work you ...

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It would seem that the general rules should be: MathJax is only to be used for formulas. MathJax should be used kept on its own line. Those two rules could be broken in situations where it makes sense, but that should be the exception.

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I'm the guy who suggested the edit, so I feel obligated to reply to this. (Sheepish grin) One thing to clear up: Adding LaTeX was not the primary reason for the edit. Look at the revision history - there were some grammar corrections and a tag edit. I also added in a link for HDPE, which made the question clearer. Not terribly Earth-shattering, but important ...

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Examples Well-Received Questions Here are a few examples of questions that have been well-received on Engineering SE. Why doesn't a lightning strike destroy the lightning rod? What is the physical interpretation of the second term in the viscous stress tensor in the Navier-Stokes equations? My customer wants to use my products to do something unsafe. ...

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Sample Outline If you learn better from seeing an example, you may find this basic outline useful. It is not necessary to follow this format exactly; however, your question will benefit by having all of the information necessary to fill in the outline, or that information should be intuitive or obvious to the casual observer. Question Title Use a ...

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Specific to questions on pumps and pumping systems: So you want to size a pump or pick a pump or have questions if a particular pump is suitable to your purpose. Here's what you should state in your question: State the problem you want to solve, what you have tried so far and where you get stuck. With most questions on pumps, this information will be needed ...

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