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# Information pages worth keeping or developing.

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http://web2.0calc.com/questions/world-time-map

http://web2.0calc.com/questions/how-to-search-use-keywords-to-find-what-you-want

http://web2.0calc.com/questions/negative-exponents-negative-indices

http://web2.0calc.com/questions/found-something-that-makes-life-a-lot-easier

This thread is mainly being developed by Stu.
http://web2.0calc.com/questions/formula-and-calculator-top-free-sites

http://web2.0calc.com/questions/positive-and-negative-numbers-directed-numbers

http://web2.0calc.com/questions/good-manners-are-always-important_2
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Feb 10, 2014

#16
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In answer to all those people who want to know how to do fractions on this calculator:

Re: How do you do fractions on this calculator?

"5 and a half - 8 and a quarter would be

$$\left({\mathtt{5}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{1}}}{{\mathtt{2}}}}\right){\mathtt{\,-\,}}\left({\mathtt{8}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{1}}}{{\mathtt{4}}}}\right) = -{\mathtt{2.75}}$$ "(by Melody)

Re: where is the fraction button

"It is a box above a box" (by Anonymous)

"On many calculators out guest is correct. There is no fraction button on the Web2.0calc  You have to use the $$\div$$ button. To enter 3 and 1/2 - 6 and a quarter you would press

$$(3+1\div2)-(6+1\div 4)=$$" (by Melody)

Re: How do we use fractions on this calculator??

"with the $$\div$$ button. If you are doing calculations with mixed numerals it is best to put them in brackets like $$(3+1\div 2)$$" (by Melody)

"You can use forward slash / as we write in a fraction. 6/2 is a fraction. And if there are more numerals involved, use brackets as (6*2+8)/4

I hope it helps." (by novice)

"you simply make it a decmil if 4 were 1/4 i would put 4.25" (by Gman2598)

Apr 29, 2014

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http://web2.0calc.com/questions/formula-and-calculator-top-free-sites

The calculator has a built in database for a large number of constant values used in for example physics.
Think of things like the atomic mass constant or electron mass.
You can acces it by choosing [snd] [const] where you'll find a list.
http://web2.0calc.com/questions/new-calculator-option
Feb 28, 2014
#5
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Postby Melody » Wed Feb 26, 2014 11:34 pm

I just watch a you tube that I quite enjoyed. I thought some of you may enjoy it as well.

Born: January 27, 1969 (age 45), Gladesville
Occupation: Disc jockey, Television Show Host, Radio personality, Comedian, Mathematician
Biography: Adam Barrington Spencer is an Australian radio presenter, comedian, and media personality. He first came to fame when he won his round of the comedic talent search Raw Comedy in the mid-1990s. Soon thereafter, he began working at Triple J, on mid-dawn and drive shifts before hosting the Triple J... MORE

Melody online
Posts: 2567
Joined: Sat Sep 28, 2013 2:59 pm
Location: Sydney, Australia
Mar 2, 2014
#6
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Dms, I like Serena

http://web2.0calc.com/questions/test_6
Mar 8, 2014
#7
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[size=150] Fun with Fractals[/size]

I've been of looking at some interesting you tube clips on Fractals.
I thought some of you might like to watch one too.

Just highlight the address, right click and choose goto.

There are some other videos there too. I haven't looked at the others but they look like they would be interesting too.

Melody.
Mar 18, 2014
#10
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Calculator for linear regression - suggested by Alan.
http://www.alcula.com/calculators/statistics/linear-regression/

Understanding conics, focus, directric etc interactive graphing.
http://www.intmath.com/plane-analytic-geometry/4-parabola.php
Apr 4, 2014
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Actually when I think about it, almost all the time I do refer to a website, it is some part of www.mathisfun.com.
The website explains lots of things in mathematics from percentages to pythagoras theorem.

I like the website a lot because the explanation generally does not require any pre-knowledge.
The website explains in a very clear (and yet not dry) way why something is used and how someone can use it him/herself.
Apr 7, 2014
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Thanks reinout-g,

I also refer people to the mathisfun site all the time. It is a great site.
Apr 12, 2014
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Fractions on the calculator

http://web2.0calc.com/questions/how-do-i-type-in-fractions

Apr 28, 2014
#16
+5478
+14

In answer to all those people who want to know how to do fractions on this calculator:

Re: How do you do fractions on this calculator?

"5 and a half - 8 and a quarter would be

$$\left({\mathtt{5}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{1}}}{{\mathtt{2}}}}\right){\mathtt{\,-\,}}\left({\mathtt{8}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{1}}}{{\mathtt{4}}}}\right) = -{\mathtt{2.75}}$$ "(by Melody)

Re: where is the fraction button

"It is a box above a box" (by Anonymous)

"On many calculators out guest is correct. There is no fraction button on the Web2.0calc  You have to use the $$\div$$ button. To enter 3 and 1/2 - 6 and a quarter you would press

$$(3+1\div2)-(6+1\div 4)=$$" (by Melody)

Re: How do we use fractions on this calculator??

"with the $$\div$$ button. If you are doing calculations with mixed numerals it is best to put them in brackets like $$(3+1\div 2)$$" (by Melody)

"You can use forward slash / as we write in a fraction. 6/2 is a fraction. And if there are more numerals involved, use brackets as (6*2+8)/4

I hope it helps." (by novice)

"you simply make it a decmil if 4 were 1/4 i would put 4.25" (by Gman2598)

kitty<3 Apr 29, 2014
#17
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First reference page for new site (30/4/14):

GRAPHING LOG FUNCTION ON WEB2 CALC

http://web2.0calc.com/questions/how-do-you-insert-log-into-the-graph-on-this-website

Apr 30, 2014
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May 6, 2014
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OEIS - Online Encylopedia of Integer Sequences

May 10, 2014
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Conversion web page

http://www.convert-me.com/en/convert/volume/

Explanation of Pi

Addition and subtraction of directed numbers (there is an older post around somewhere as well)

http://web2.0calc.com/questions/it-just-doesn-t-make-sense-to-me

May 15, 2014
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Sat 24-5-14

Speed questions.  Good (High level) junior high problems.  Also rosala says she doesn't understand.

http://web2.0calc.com/questions/bernard-drove-for-6-hours-at-an-average-speed-of-116-km-h-to-reach-town-for-the-first-262-km-of-the-journey-he-drove-at-131-km-h-find-the

How to solve a more difficult equation  x+6=0.5^x

http://web2.0calc.com/questions/solve-for-x-x-6-5-x

Estimating roots - I want to have a better look at these answers, I am only familiar with newton's method.

http://web2.0calc.com/questions/hi-i-want-to-know-how-to-solve-somthing-like-nbsp

Square root in answer verses introduced square root.

Graphing complicated trig functions

http://web2.0calc.com/questions/graphing-trig-functions_1#rr2

Surface are of a cylinder by NinjaDevo

http://web2.0calc.com/questions/what-is-the-surface-are-of-a-cylinder-with-r-8-h-4

http://web2.0calc.com/questions/what-is-the-value-of-pi

May 24, 2014
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Great web pages

Solving Inequalities.

http://www.mathsisfun.com/algebra/inequality-solving.html

Factoring trinomials using the grouping method.  You Tube Clip (12/6/14)

Measuring volume using displacement.

Jun 14, 2014
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## NinjaDevo has redone most of this - this is his version

http://web2.0calc.com/questions/new-information-worth-keeping-or-developing-rough-draft

Jun 16, 2014