1. ## Bigger Brackets

How do I get bigger brackets. I want the small brackets here to be much bigger and cover the entire thing, as in they should stay where they are but be taller:

$\displaystyle (\sqrt[1^0]{\frac{{\sqrt{\frac{198(99^3(99^{-1}))}{99}}}}{\sqrt {2}}})^{sin90\cdot^{cos90\cdot^{tan45\cdot}}}$

Whilst I'm here, how do you get logx n

so like log2 32 ....which would be 5?

2. Hi,

Use \left( and \right) in place of ( and ), respectively. This way LaTeX will choose the size of the brackets. The following code
Code:
\left( \sqrt[1^0]{\frac{{\sqrt{\frac{198(99^3(99^{-1}))}{99}}}}{\sqrt {2}}} \right)^{sin90\cdot^{cos90\cdot^{tan45\cdot}}}
gives

$\displaystyle \left( \sqrt[1^0]{\frac{{\sqrt{\frac{198(99^3(99^{-1}))}{99}}}}{\sqrt {2}}}\right)^{sin90\cdot^{cos90\cdot^{tan45\cdot}} }$

Edit:
Whilst I'm here, how do you get logx n
\log_{10}24 gives $\displaystyle \log_{10}24$.

3. Thanks, you've sorted all of my problems. =]

4. You could improve readability even further (though it gets increasingly frustrating to type).

$\displaystyle \left( \sqrt[1^0]{\dfrac{{\sqrt{\dfrac{198(99^3(99^{-1}))}{99}}}}{\sqrt {2}}}\right)^{{{\mbox{$\sin90^\circ$}}^{\mbox{$\co s90^\circ$}}}^{\mbox{$\tan45^\circ$}}}$

5. Wow thats really good, how do you do that?

I need the whole of my signature like that =S.