Hello Everyone,(adsbygoogle = window.adsbygoogle || []).push({});

I'm 16, and am trying to teach myself Calculus. Its just been a day since I started, and I seemed to be going on well pretty well by myself till I came across the topic of functions.

I do not have access to a math teacher at the moment because my holidays are going on. I was wondering if any one of you could help me with this.

Can you clearly explain what a function means, what is its use, and some examples of some sums.

Also, while going through the examples in my textbook, I came across a question which asks-

- Does the relation {(x,y) Iy=IxI, x is a rational number)}define an equation? If yes, justify, write the range and draw the graph.

(First of all, the 'I' in the question is not exactly an 'i' but it is a line bracket. I do not know how to make it on the computer. Secondly, what does a line bracket mean? That part, "Iy=IxI" -- what exactly does it mean?

I'm sorry for such a question, but I couldn't find a better place for such a question of mine. I hope you people help.

Thank You. :)

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# Homework Help: Calculus Help!

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