Melody

Thanks Alan,

I was waiting for you to answer that first one.  

Using the Web2 calculator

1) How do I type in fractions

Thanks Rosala.  

$$\\\frac{1}{i}\\\\
=\frac{1}{\sqrt{-1}}\\\\
=\frac{1}{\sqrt{-1}}\times \frac{\sqrt{-1}}{\sqrt{-1}}\\\\
=\frac{1\sqrt{-1}}{-1}\\\\
=\frac{\sqrt{-1}}{-1}\\\\
=-i$$

That is what I get anyway!  And WolfraAlpha agrees with me.  There seems to be a problem with the site calc.

@@ End of Day Wrap  Thurs  18/9/14   Sydney, Australia   Time 4:50 pm    ♬  

Hi everyone.

The forum is far too busy to get all the questions answered.  I'm sorry question askers but that is the way it is and I for one did not even try.   

There were many great answers however and these were given by Alan, CPhill, Reinour-g, Heureka, SelenaPubbIT, Unknown Name. Kitty<3, Rosala, Nuijai and angelicaMarrufo.  A big thank you to each of you.  

Here are just a couple of interest posts.  I am sure there were many more. I need you to send the address of them to me by private message if you want me to include them.   

1) Reinout's Lunchbox unwrap.  Thank you  

Fri 19/9/14

1) A problem with the site calc (Heureka and Melody)

Hi Heureka

I was showing off my latex for the algebraic division and I wondered if you could improve upon it?

Yes you are very crafty!

f(x)=-3(x+1/2)^2+1/2

I haven't actually solved anything - there is nothing to solve.  I have just simplified.  

$$\\f(x)=-3(x+0.5)^2+0.5\\\\
f(x)=-3[(x+0.5)^2]+0.5\\\\
f(x)=-3[x^2+x+0.25]+0.5\\\\
f(x)=[-3x^2-3x+0.75]+0.5\\\\
f(x)=-3x^2-3x+0.75+0.5\\\\
f(x)=-3x^2-3x+1.25\\\\$$

It is the score with the highest frequency.  The one (or ones) that happens the most often.