1. ## arctan(x)

Why doesnt math]\arctan(x)[/tex] yield a version that is not italicized, is it not a function, it says it is on LaTeX websites

The same goes for any inverse trigonometric or hyperbolic functions

2. Originally Posted by Mathstud28
Why doesnt math]\arctan(x)[/tex] yield a version that is not italicized, is it not a function, it says it is on LaTeX websites

The same goes for any inverse trigonometric or hyperbolic functions
i guess the syntax is off. \arctan x works ...$\displaystyle \arctan x$ see?

it is just the way the codes are set up. no parentheses

3. Originally Posted by Mathstud28
Why doesnt math]\arctan(x)[/tex] yield a version that is not italicized, is it not a function, it says it is on LaTeX websites

The same goes for any inverse trigonometric or hyperbolic functions
$$\arctan(x)$$ produces:

$\displaystyle \arctan(x)$

RonL

4. Originally Posted by CaptainBlack
$$\arctan(x)$$ produces:

$\displaystyle \arctan(x)$

RonL
Hmm...I think you are magic CaptainBlack, for it did not work before...well anyways

$\displaystyle \arctan(x)!$....and thats happiness..not factorials xD

$\displaystyle \arctanh(x)$ $\displaystyle \leftarrow$ what about arctanh?

5. Originally Posted by Mathstud28
Hmm...I think you are magic CaptainBlack, for it did not work before...well anyways

$\displaystyle \arctan(x)!$....and thats happiness..not factorials xD
what were you doing?! you probably had a typo in the arctan itself

6. Originally Posted by Jhevon
what were you doing?! you probably had a typo in the arctan itself
shut up...

7. Originally Posted by Mathstud28
Hmm...I think you are magic CaptainBlack, for it did not work before...well anyways

$\displaystyle \arctan(x)!$....and thats happiness..not factorials xD

$\displaystyle \arctanh(x)$ $\displaystyle \leftarrow$ what about arctanh?
arctanh is not on the standard list of functions so you have to do it the hardway:

$${\rm{arctanh}}(x)$$

$\displaystyle {\rm{arctanh}}(x)$

RonL

8. ## Re: arctan(x)

Originally Posted by CaptainBlack
arctanh is not on the standard list of functions so you have to do it the hardway:

$${\rm{arctanh}}(x)$$

$\displaystyle {\rm{arctanh}}(x)$

RonL

What is that "\rm" for?

9. ## Re: arctan(x)

Originally Posted by Monoxdifly
What is that "\rm" for?
According to the "Bible" for TeX it is an out-of-date font declaration. i.e. no longer used.