Here is a question just for LaTex beginners (Like DragonSlayer)

Write 3/5 as an upright fraction using Latex.

you have to open up the LaTex tab and write it in there.

You can refer to the LaTex Sticky topic to try and work out how

OR you can look back over old answers

OR you can google it. :)

DS, **If** you can manage this **all by yourself** I will give you thumbs up!

Melody
Jul 30, 2014

#1**+8 **

$$\frac{3}{5}$$

Who says an old dog can't learn new tricks????

Where's my points ??.......Where's my points ??.....Where's my points ??..........Where's my points ??..........Where's my points ??.........

CPhill
Jul 30, 2014

#3**+3 **

Ok you two - fair enough.

Dragon was complaining that if he only answered validly then there would be nothing there for him at all.

BUT I want you two to learn as well.

**Something harder**.

okay see if you can write the quadratic formula in LaTex. All set out beautifully.

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

THIS NEXT ONE IS JUST FOR DRAGON! Write 6 and three quarters in LaTex (as a whole number and an upright fraction).

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

Melody
Jul 31, 2014

#4**+3 **

Aw, heck....!!! You mean Aziz and I can't play, too???

I'm taking my marbles and going home........

CPhill
Jul 31, 2014

#5**0 **

YES I WANT YOU TO PLAY TOO! CAN'T YOU DO THE HARD ONE!

ARN'T YOU UP FOR A CHALLENGE?

YESTERDAY I TOLD YOU YOUR BLOOD WAS WORTH BOTTLING AN NOW YOU ARE PIKING!!!

COME ON - GIVE IT A GO!

Melody
Jul 31, 2014

#6**+5 **

$$\begin{array}{*{20}c} {x = \frac{{ - b \pm \sqrt {b^2 - 4ac} }}{{2a}}} & {{\rm{when}}} & {ax^2 + bx + c = 0} \\ \end{array}$$

What a genius I am....!!!! You know....this copying and pasting code stuff is pretty brain-draining ....!!!!

CPhill
Jul 31, 2014

#7**0 **

EXCELLENT CHRIS - I KNEW YOU COULD DO IT!!!!

It gets much easier with practice.

Here is a very special gift just of you! I hope that you don't already have one like this - It is rare!

Do you want to play again?

Melody
Jul 31, 2014

#8**0 **

WOW...that's a pretty cool image!!!...I might even consider that as a new avatar - it's time to change mine, anyway......thanx......

CPhill
Jul 31, 2014

#9**0 **

That would make a great avatar for you! Although I really like the one that you have now. It is so you!

Melody
Jul 31, 2014

#10**+3 **

CHRIS CHEATED (NOT REALLY) - I DIDN'T SPELL OUT THE RULES PROPERLY DID I CHRIS

You can keep your points and your marble. So please stay and play

Chris can you please copy that code and paste it straight onto the post underneath the output.

Then I will talk you through it - It is more complicated then it needed to be.

Melody
Jul 31, 2014

#12**+3 **

That is great Ninja. That is all you needed to do Chris.

Chris got his from the site entitled. "How to get from Minesota to Louisiana via Sydney."

Although the other bit that Chris wrote was also relevant. That is what the quadratic equation is used to solve!

Melody
Jul 31, 2014

#14**+3 **

Yes that is true - look at Ninja's code. It is nice and simple.

Actually I'd still like you to display your code properly. I'd like to take a look at it.

Thanks.

Melody
Jul 31, 2014

#15**0 **

Here's the code......

\begin{array}{*{20}c} {x = \frac{{ - b \pm \sqrt {b^2 - 4ac} }}{{2a}}} & {{\rm{when}}} & {ax^2 + bx + c = 0} \\ \end{array}

CPhill
Jul 31, 2014

#16**+3 **

Oh I wasn't aware that you needed that other part that Chris had.

This is fun though. Got any other challenges?

NinjaDevo
Jul 31, 2014

#17**+3 **

\begin{array}{*{20}c} {x = \frac{{ - b \pm \sqrt {b^2 - 4ac} }}{{2a}}} & {{\rm{when}}} & {ax^2 + bx + c = 0} \\ \end{array}

This is all array stuff that you do not need. It has been used as a way to separate the three parts, that is foumula, when and initial equation

the 2 backslashes before it ate only a line break so they are definitely not needed.

\begin{array}{*{20}c} all the ampersands & and \end{array}

So I'm going to see what is left

x = \frac{{ - b \pm \sqrt {b^2 - 4ac} }}{{2a}}} & {{\rm{when} ax^2 + bx + c = 0

I don't know what the \rm{ } does. I looks like it is meant to be short for remark but i use \mbox{ } for that

\mbox is short for message box.

If we get rid of all that then this is what I have - the output is underneath

x = \frac{{ - b \pm \sqrt {b^2 - 4ac} }}{2a}}} when ax^2 + bx + c = 0

$$x = \frac{{ - b \pm \sqrt {b^2 - 4ac} }}{2a}}} when ax^2 + bx + c = 0$$

Now I want a space between the three sections so I am going to use the function \qquad (quad means 4 so I think this means leave 8 spaces. I could use \quad for a smaller gap

x = \frac{{ - b \pm \sqrt {b^2 - 4ac} }}{2a}}} \qquad when\qquad ax^2 + bx + c = 0

$$x = \frac{{ - b \pm \sqrt {b^2 - 4ac} }}{2a}}} \qquad when\qquad ax^2 + bx + c = 0$$

There you go - that is looking better.

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

Now, for my own sake I want to look at this bit

\begin{array}{*{20}c} all the ampersands & and \end{array}

in particular this bit {*{20}c} it goes with the ampersands

It means something like

Put the formula at the begining&use the next 20 spaces for when¢re the last bit

I am not really sure what it does and it would be really good if **HEUREKA** tells us.

He know everything about LaTex.

Melody
Jul 31, 2014

#18**+3 **

Alright Ninja,

Here is another one - try reproducing this - not this big!

If you get it out then try enclosing it in big brackets

Melody
Jul 31, 2014

#19**+8 **

Best Answer

Had to look up a few things, but here it is!

$$\Big(\overline{x} \pm z\frac{s}{\sqrt{n}}\Big)$$

Or, alternatively:

$$\left(\overline{x} \pm z\frac{s}{\sqrt{n}}\right)$$

NinjaDevo
Jul 31, 2014

#20**+3 **### Here is a stack of them that you can practice on

This is how I would have done it - it is slightly different from yours

This proves that there is more than one way to skin a cat - oh sorry kitty.

I new about using Big but it has never worked fo me when I wanted to use it!

The \left and \right is probably better most of the time because it makes it the correct size, as opposed to a fixed large size.

\left(\bar{x} \pm z\frac{s}{\sqrt{n}}\right)

$$\left(\bar{x} \pm z\frac{s}{\sqrt{n}}\right)$$

Hint: the flatterned s at the front of each one is an integral sign.

Melody
Jul 31, 2014

#21**+5 **

** {*{20}c} **?

Hi Melody,

I will answer your question: the meening of **{*{20}c} **

Generally :

***{count}{form}**

Example:

**{*{20}c} **means {cccccccccccccccccccc} "c" twenty times

{*{3}{|r}} means {|r|r|r} "|r" three times

heureka
Jul 31, 2014

#24**+3 **

Look here

http://web2.0calc.com/questions/here-is-a-question-just-for-latex-beginners-like-draagonslayer#r3

Never mind this was YOUR question Dragon - And I quote.

THIS NEXT ONE IS JUST FOR DRAGON!

Write 6 and three quarters in LaTex (as a whole number and an upright fraction).

Melody
Aug 1, 2014

#26**0 **

Melody, can I do another one please?

I solved the one you told me to do.

DragonSlayer554
Aug 1, 2014

#27**0 **

Melody, the first one is REALLY EASY.

$${\frac{{\mathtt{3}}}{{\mathtt{5}}}}$$

DragonSlayer554
Aug 1, 2014