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

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#2 Re: Maths Is Fun - Suggestions and Comments » Remainder Theorem » 2017-10-07 22:44:15

Its easy.

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

#3 Re: Help Me ! » A simple question is not being able to solve by me » 2017-10-04 18:31:35

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.

#4 Re: Help Me ! » A simple question is not being able to solve by me » 2017-10-03 22:51:55

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

#10 Re: Help Me ! » geometry » 2017-10-03 01:38:44

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.

#11 Re: Help Me ! » Trapezium » 2017-10-03 01:35:49

a + d = 4
b + c = 6

How did you get these 2 equations?

#12 Re: Help Me ! » Trapezium » 2017-10-02 21:20:46

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

ta.png

#13 Re: Maths Teaching Resources » Maths Books » 2017-09-26 01:12:01

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.

#15 Re: Help Me ! » Plzz help me in this proof » 2017-09-03 02:52:21

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

#16 Re: Exercises » A nice question » 2017-08-31 21:20:26

What I did was simple. I did this:

#17 Re: Help Me ! » Plzz help me in this proof » 2017-08-31 21:12:47

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

#18 Help Me ! » Plzz help me in this proof » 2017-08-31 02:46:46

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?

#19 Re: Maths Is Fun - Suggestions and Comments » Question for administrators » 2017-08-30 23:30:01

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?

#20 Re: Exercises » A nice question » 2017-08-30 23:28:44

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.

#21 Re: Maths Is Fun - Suggestions and Comments » Question for administrators » 2017-08-29 22:26:57

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

#22 Exercises » A nice question » 2017-08-25 00:07:12

iamaditya
Replies: 6

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

#23 Help Me ! » limit (is it correct) » 2017-08-25 00:04:34

iamaditya
Replies: 1

What is the:

  As far as i think it is coming 1. Well, is it?

#25 Help Me ! » Why is it called f(x+Δx)? » 2017-08-22 07:08:24

iamaditya
Replies: 3

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

Capture1.png

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

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