who or what is Brosef ???

There are no equations!     

There are some really good stats calculators that are referenced in the "Reference Material"  Sticky topic :)

Maybe this is what you mean ?

$$\\\frac{100}{3}\times 10^{-11}\\\\
33.\bar{3}\times 10^{-11}\\\\
3.3\bar{3}\times 10\times 10^{-11}\\\\
3.3\bar{3}\times 10^{-10}\\\\
\frac{3.3}{10^{10 }}$$

Sorry I did not see your post there before.  

Happy birthday Rose98,

on this calc use arc tan   

It is the same as inverse tan

atan(5.5/9.3)=

$$\underset{\,\,\,\,^{\textcolor[rgb]{0.66,0.66,0.66}{360^\circ}}}{{tan}}^{\!\!\mathtt{-1}}{\left({\frac{{\mathtt{5.5}}}{{\mathtt{9.3}}}}\right)} = {\mathtt{30.599\: \!978\: \!693\: \!209^{\circ}}}$$

Thanks Chris, Sabi and Dragonlance,

I'll just put my 2 bob's worth in :)

$$\\\frac{x^2-4+4}{x-3}>0\\\\
\frac{(x-2)^2}{x-3}>0\\\\
x\ne 3\\\\
\frac{(x-2)^2}{x-3}\times (x-3)^2>0\times (x-3)^2\\\\
(x-2)^2(x-3)>0\\\\
consider\;\; y=(x-2)^2(x-3)\;\;\\\\$$

You are right Sabi this is not a parabola but it is a polynomial - (a parabola is a polynomial of degree 2) 

When will the graph be above the x axis?

There is a root at x=3, and a double root at x=2.

The highest power of x is 3 That is the degree of this polynomial is 3.

This means that the graph will have 3 directions.

I can immediately see that the coefficient is X^3 is 1. i.e.   The leading coefficient=1.

A positive leading coefficient means that the graph will finish in the top right hand corner.

So I know a lot about how this graph will look, just by a cursory examination of the formula.

I know that it will look like this!

I can see from the graph that this is greater than 0 when x>3

---------------------

I wrote this post some time ago, I just fished it out of our reference material sticky topics.

It would be a very good idea for you to try and make sense of it all.

I have done the top row of graphs, maybe you would like to take a look at the bottom row :))

Hi     TR or is that RT

Isn't one of you enough. LOL

Great answers.  Thanks Chris and Heureke.

I especially like yours Heureka. 

I also like that Latex stacked question mark.

That'll have to find its way to the latex thread :)  I have added it  now :)

Thanks anon

Yes that is correct :)