Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

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**iamaditya**- Replies: 1

Its easy.

Don't you think it should be in *Help Me*.

bob bundy wrote:

And is that xyz = 1 rather than abc = 1 ?

Bob

Yeah it is.

I solved it but it took 2 whole pages to solve it. Phew! I finally got the numerator and denominator as equal and hence it is equal to 1.

I'm sorry I gave the question wrong, I edited it . Now see.

Yeah, I forgot that.

**iamaditya**- Replies: 7

**iamaditya**- Replies: 2

Oh wow,

It seems ages since Ganesh has posted something in *Help Me*. He usually used to post in *Ganeh's Puzzles* and *Dark Discussions at Cafe Infinity*.

If a cone and a cylinder have the same radius and height, you'd expect the volume of the cone to be less than the cylinder. But why one third and not some other fraction, or maybe even an amount unconnected with the cylinder's volume?

I can show this if you know some calculus; specifically a little bit of integration. Post back if you want to see this.

Yeah, I too want to know about it.

a + d = 4

b + c = 6

How did you get these 2 equations?

After 15 min of thinking I found this but I don't know whether its correct or not...

iamaditya, it has been four and a half months since your last reply to bobbym, who has since died.

Yeah I know, (and I was the first few of them to know about it) so I was not expecting a reply. I wanted other members to give answers but till now I haven't received a single one.

The answer to # 15 is log(12).

Yes it's correct.

What is Compuhigh?

Hmm I see. I am trying to learn differential calculus now since its easy for beginners.

What I did was simple. I did this:

Hmm nice, but I took some time to grasp it.

**iamaditya**- Replies: 4

Hi all;

I was trying to prove that the derivative of e^x is e^x, but I couldn't.

Now, how to proceed further?

ganesh wrote:

The forum is the brainchild of MathsIsFun. He is the first first member, Administrator and he decides what is right or not, takes the opinion of other moderators, and others, if required. (Later, bobbym, Administrator assisted MathsIsFun; as your are all aware, bobbym is no more. Thereafter, bob bundy and me took this place.)

I know that. I was asking who is Rod?

Hi,

It has been a week but I have received no solutions of this answer. Is the question not being able to solve by anyone!? If not, Pzz tell me and i will post the solution.

*P.S.-I myself took one day to solve it.*

Who is Rod? Is it the name of the user MathsIsFun? He is the creator of the website?

**iamaditya**- Replies: 6

Here's a simple little nice question which I finally was able to solve today. Here's the quetion:

**iamaditya**- Replies: 1

What is the:

As far as i think it is coming 1. Well, is it?Thnx bob and zetafunc.

**iamaditya**- Replies: 3

I was learning differential calculus from mif when I saw this:

Why is the above point called f(x+Δx)?