Hello. This is my first post. I am glad to be a member of this good forum.

I ignore the way to use LaTex in a post. Can someone teach how to do it ? 

Thanks in advance.

8 minutes ago, quite said:

I ignore the way to use LaTex in a post. Can someone teach how to do it ? 

It may need to be updated, but: 

 

Thank you very much ! It will surely help me many times in the future. The first thing I need to know is how to activate LaTex within a post. What should I put? Do I put [tex] [/ tex], or what else?

the tag to use is [math] [/ math]

Thank you very much ! Now I will try it.

[math]e{i\phi}=\cos{\phi}+i\sin{\phi}[/math]

Have this been successful?

Edited August 21, 20187 yr by quite

like the protective kind?

55 minutes ago, quite said:

Thank you very much ! Now I will try it.

eiϕ=cosϕ+isinϕ Have this been successful?

Almost.

You have to type "e^{i\phi}" in math mode to get the exponent right:

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

makes 

\(e^{i\phi} = \cos \phi + i \sin \phi \)

[math] e^{i \phi} [/math]

Write something

[math]C^2[/math]

Write something

[math]e^{i\phi}[/math]

Edited August 22, 20187 yr by quite
test

[math] x^2=y [/math]

\(f(x)=\frac{x}{3}\)

\[f(x)=\frac{x}{3}\]

\( x^2=y \)