Melody

Come on Rosala, you can get this one  !! 

No Rosala, I do not think so, you are not very good at this guessing game :))

Thanks Alan but worry too much, I don't understand expansions much.   :(

I only know the binomial expansion.

I just wondered :/

I don't think it is 7up Rosala :))

Yes, this anon knows when I was born because he was already an old man then!

Maybe he was a hospital orderly?

Anyway, I expect he read this Dicken's novel as it was being published. So he should be able to help you :)

I actually do sympathize with you Rosala.  I have never read this particular Dickens book but I did have to study others when I was a school.  I DID read them but I did not particularly enjoy reading them.  Mind you some of the other books we had to read were definitely worse.

A Tale of Two Cities does have a trememdous amount of history in it.  So that alone makes it better than some of the others.  At least you get to learn something.

Anyway

Some of these questions could be answered if you just google them.

This should help :/

Are you suppose to have read this book Rosala?  

It looks rather like homework to me :/

$$\\21/-9\times 5+7(-9-11)\times 7.2\\\\
=\frac{21}{-9}\times 5+7\times(-20)\times 7.2\\\\
=\frac{21*5}{-9}+-140\times 7.2\\\\
=\frac{105}{-9}+-1008\\\\
=-11\frac{6}{9}-1008\\\\
=-11\frac{2}{3}-1008\\\\
=-1019\frac{2}{3}\\\\$$

Rosala, do you mean "A tale of two cities" by Charles Dickens?

$$\begin{array}{rlll}
sin (\frac{\pi(x-6)}{4})&=&0.5\\\\
\frac{\pi(x-6)}{4}&=&n\pi +(-1)^n\times \frac{\pi}{6}\qquad & n\in Z\\\\
x-6&=&4n +(-1)^n\times \frac{4}{6}\qquad & n\in Z\\\\
x&=&4n+6 +(-1)^n\times \frac{2}{3}\qquad & n\in Z\\\\
x&=&4n+6 + \frac{(-1)^n\times 2}{3}\qquad & n\in Z\\\\
\end{array}$$

I guess that is the domain since that is all the values that x can be  :/