ITT Helpful facts and formulas to remember

[Daddy]

The sum of numbers from 1 to n (e.g. 1 to 100,  being 1+2+3+...n) is equal to [tex]\frac{n(n+1)}{2}[/tex].
Fahrenheit to Celsius: [tex]C = (F - 32) * \frac{5}{9}[/tex]
Celsius to Fahrenheit: [tex]F = (C* \frac{9}{5}) + 32[/tex]

[Andria]

K= Ã,°C + 273

[Hiro]

Thank you for the informative tips, James.

[ME##]

Or the US should just hurry up and convert itself to the metric system already. :'(

[Kalahari Inkantation]

general formula for alkynes: C_nH_2n-2

[Hiro]

Or the US should just hurry up and convert itself to the metric system already. :'(

Seriously 

[[REDACTED]]

Curl (F)=

[Kalahari Inkantation]

sin(1/2)Ã�‘=Ã,±âˆš(1-cosÃ�‘/2)

[Thyme]

Area of a circle: [tex]Pi * ray^2[/tex]



[spoiler]

Code Select


<script language=JavaScript type="text/javascript">
var ray = window.parseInt (window.prompt("Enter the ray of the circle in centimeters here: ", ""));
var area = Math.PI * ray * ray;
window.alert ("Your circle's area is of " + area + " centimeters. ");</script>



i dunno how to use Math.Pow :'([/spoiler]

[Kalahari Inkantation]

a²+b²=c²

[[REDACTED]]

Area of a circle: [tex]Pi * ray^2[/tex]



[spoiler]

Code Select


<script language=JavaScript type="text/javascript">
var ray = window.parseInt (window.prompt("Enter the ray of the circle in centimeters here: ", ""));
var area = Math.PI * ray * ray;
window.alert ("Your circle's area is of " + area + " centimeters. ");</script>



i dunno how to use Math.Pow :'([/spoiler]

I can't code for shit. ;_;

[Samus Aran]

Or the US should just hurry up and convert itself to the metric system already. :'(

we already tried

[Kalahari Inkantation]

we already tried

let's try again

[Commander Fuckass]

2+2=4

Area of a square=s2

[Kalahari Inkantation]

x equals negative b plus or minus square root b squared minus 4ac all over 2a

sing to the tune of pop goes the weasel