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 #306
avatar+118723 
+6

@@ End of Day Wrap        Mon 6/10/14 Sydney,     Australia Time 9:45pm      ♬

 

Hi all, 

 

It was a quiet day today.  As always there were great answers from Alan, CPhill, radio and Adrienne.  Thanks you all.

 

CPhill often produces great mathematics answers but he also has a skill which I am sadly lacking.

He is a forensic mathematician.  He can read between the lines and work out what the intended question is.

I sometimes get stuborn and answer the question asked because I want people to learn to present their questions properly.  They can always repost with their intended question.

But even though this is sometimes true I am really not gifted at fathoming what an intended question is.  So with this one I really did not 'see' what the intended question was.  On re-reading the question I can see that I was at fault this time.  I needed to spend more time thinking about the actual wording of the question.

Chris read it properly and answered the intended question.  Sometimes the logic is more obscure than this, Chris really is quite gifted at reading between the mathematical lines.  It is an admirable gift.  Thank you Chris.

http://web2.0calc.com/questions/strange-answer-when-finding-limit#rr4

 

Other interest post: 

A little bit of physics anyone (Thanks Alan)

http://web2.0calc.com/questions/a-521n-sled-is-pushed-across-a-cement-sidewalk-at-a-constant-speed-a-horizontal-force-of-36n-is-exerted-what-is-the-coefficient-of-sliding

More Binomial stuff.   (Thanks Alan and Chris)

http://web2.0calc.com/questions/more-binomial-stuff

Trig   (Thanks CPhill and Melody)

http://web2.0calc.com/questions/if-sin-50-p-then-sin-140

 

That is it for tonight.

 

                     ♫♪  ♪ ♫                          ♬ ♬ MELODY ♬ ♬                            ♫♪  ♪ ♫ 

Oct 5, 2014
 #305
avatar+118723 
+3

@@ End of Day Wrap        Sun 5/10/14 Sydney,     Australia Time 10:15pm      ♬

 

Hi all, 

Sorry, I have not been around much the last couple of days.  Today I was at the beach.  It is beautiful weather in Sydney at present.  

I have made sure that everyone has been given credit for their answers though.  Our wonderful answerers have been Alan, NinjaDevo, geno3141, Rosala, Asassyninja, CPhill, Dragonslayer 554, aoanewbie, AzizHusain, Math and Quinn.  A huge thanks to each of you.    

 

Now for a few interest posts:

 

1) Thanks Rosala, your laughs are always great.   

http://web2.0calc.com/questions/let-s-end-the-day-with-a-laugh_3

2) I like these.  Thanks for the answer CPhill.   

http://web2.0calc.com/questions/how-do-i-make-100-using-four-4s

3) Graphing tangent function.  Thanks to Chris and Melody.

http://web2.0calc.com/questions/which-graph-best-represents-tan-x-2-y-pictures-included

4) What happens if a number is raised to the power of 0?  Thanks for promoting the discussion Rosala.

http://web2.0calc.com/questions/how-do-you-plug-in-10-to-the-0-power-on-a-calculator

 

That is it for today,  many of you have much of Sunday left but in NSW Australia, where I am, it is a public holiday tomorrow.  It is Labour Day, celebrating the introduction of the 8 hour work day. First introduced in 1856.  8 hours a day, 6 work days a week.   See you later.  :)

 

                 ♫♪  ♪ ♫                                ♬ ♬ MELODY ♬ ♬                           ♫♪  ♪ ♫ 

Oct 5, 2014
 #1
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Oct 5, 2014
 #8
avatar+118723 
0
Oct 5, 2014
 #2
avatar+118723 
+5

https://reference.wolfram.com/language/ref/Cosh.html

 

$$cosh(z)=\frac{1}{2}(e^{-z}+e^{z})$$

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Oct 5, 2014

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