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Post by Hellfire on May 22, 2013 9:47:36 GMT -5
I'm not sure if we could do it in the Forum, but is there a way to somehow incorporate the option to draw pictures in the Help topics? This would be useful when solving Physics and some Calculus Problems. Not sure if it is doable, but I think it would help those of us whose cameras on our phones don't always work when we want them to.
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Post by FPEPro on May 22, 2013 21:40:43 GMT -5
Hellfire, I have seen this before in another forum. But I'm not sure if it's possible with this forum package. One of the Admins would need to answer that. Personally, if I need to post a drawing or solution, I just make it on my computer then load it to tinypic.com, then it's easy to display here. And it's free. Chris
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Post by FPEPro on May 22, 2013 21:55:22 GMT -5
You can also use LaTeX formatting in this forum. It can be pretty useful for this stuff too. It just takes some learning to get it right.
Example 1: \[ \left( \sum_{k=1}^n a_k b_k \right)^2 \leq \left( \sum_{k=1}^n a_k^2 \right) \left( \sum_{k=1}^n b_k^2 \right) \]
\[ \left( \sum_{k=1}^n a_k b_k \right)^2 \leq \left( \sum_{k=1}^n a_k^2 \right) \left( \sum_{k=1}^n b_k^2 \right) \]
Example 2: \[ \begin{align} E &= mc^2 \\ m &= \frac{m_0}{\sqrt{1-\frac{v^2}{c^2}}} \end{align} \]
\[ \begin{align} E &= mc^2 \\ m &= \frac{m_0}{\sqrt{1-\frac{v^2}{c^2}}} \end{align} \]
Example 3: \[ \displaystyle \int_1^2 \{x^2 + 1\} dx = \left[ \frac{x^3}{3} + x \right]_1^2 \]
\[ \displaystyle \int_1^2 \{x^2 + 1\} dx = \left[ \frac{x^3}{3} + x \right]_1^2 \]
Example 4: \[ \begin{aligned} \nabla \times \vec{\mathbf{B}} -\, \frac1c\, \frac{\partial\vec{\mathbf{E}}}{\partial t} & = \frac{4\pi}{c}\vec{\mathbf{j}} \\ \nabla \cdot \vec{\mathbf{E}} & = 4 \pi \rho \\ \nabla \times \vec{\mathbf{E}}\, +\, \frac1c\, \frac{\partial\vec{\mathbf{B}}}{\partial t} & = \vec{\mathbf{0}} \\ \nabla \cdot \vec{\mathbf{B}} & = 0 \end{aligned} \]
\[ \begin{aligned} \nabla \times \vec{\mathbf{B}} -\, \frac1c\, \frac{\partial\vec{\mathbf{E}}}{\partial t} & = \frac{4\pi}{c}\vec{\mathbf{j}} \\ \nabla \cdot \vec{\mathbf{E}} & = 4 \pi \rho \\\nabla \times \vec{\mathbf{E}}\, +\, \frac1c\, \frac{\partial\vec{\mathbf{B}}}{\partial t} & = \vec{\mathbf{0}} \\ \nabla \cdot \vec{\mathbf{B}} & = 0 \end{aligned} \]
Chris
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Post by Hellfire on May 23, 2013 6:54:38 GMT -5
I will have to study that latex formatting. Thanks Chris
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Post by FPEPro on May 27, 2013 1:31:46 GMT -5
Here is some more useful sample equations in LaTeX for Physics.
\[ \displaystyle \vec{F}=m\vec{a} \\ \\ \\ e=m c^2 \\ \\ \\ \vec{F}=m \frac{d \vec{v}}{dt} + \vec{v}\frac{dm}{dt} \\ \\ \\ \oint \vec{F} \cdot d\vec{s}=0 \\ \\ \\ \vec{F}_g=-F\frac{m_1 m_2}{r^2} \vec{e}_r \\ \\ \\ \vec{R}=\frac{m_1 \vec{r}_1 + m_2 \vec{r}_2}{m_1+m_2} \\ \\ \\ \psi (t)=\hat{\psi}e^{i(\omega t\, \pm\, \theta)} \\ \\ \\ \sum_i \hat{\psi_i} cos(\alpha_i \pm \omega t) \]
\[ \displaystyle \vec{F}=m\vec{a} \\ \\ \\ e=m c^2 \\ \\ \\ \vec{F}=m \frac{d \vec{v}}{dt} + \vec{v}\frac{dm}{dt} \\ \\ \\ \oint \vec{F} \cdot d\vec{s}=0 \\ \\ \\ \vec{F}_g=-F\frac{m_1 m_2}{r^2} \vec{e}_r \\ \\ \\ \vec{R}=\frac{m_1 \vec{r}_1 + m_2 \vec{r}_2}{m_1+m_2} \\ \\ \\ \psi (t)=\hat{\psi}e^{i(\omega t\, \pm\, \theta)} \\ \\ \\ \sum_i \hat{\psi_i} cos(\alpha_i \pm \omega t) \]
Chris
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