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

You are not logged in.

## #26 2012-11-01 08:16:29

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 105,294

### Re: A powerful mobile math computing platform/web tool

Hi;

It is more useful to define it 0^0 = 1. The argument for this began with Euler who first said it. Here are a couple of more mathematicians:

Graham Knuth Patashnik wrote:

From Concrete Mathematics p.162 (R. Graham, D. Knuth, O. Patashnik):

Some textbooks leave the quantity 0^0 undefined, because the functions 0^x and x^0 have different limiting values when x decreases to 0. But this is a mistake. We must define x^0=1 for all x , if the binomial theorem is to be valid when x=0 , y=0 , and/or x=-y . The theorem is too important to be arbitrarily restricted! By contrast, the function 0^x is quite unimportant.

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
No great discovery was ever made without a bold guess.

Offline

## #27 2012-11-01 14:32:00

gauss_infinity
Member
Registered: 2012-10-23
Posts: 25

### Re: A powerful mobile math computing platform/web tool

rapidcalculator.com

Hi guys,

We added some cool new functions:

1) We added the ability to do summations (as suggested by anonimnystefy). For example, to do the sum

you would do the command: poly_x[evalsum{x^2*y+z,x,1,14}] . The result of the summation will be in terms of
and

2) We added the ability to solve equations. This equation solving function is an exact solver. For example, to solve the equatoin

where
is the unknown, you would use the command poly_x[eqsolve(x^2+a*x+(b-3*c),x)]. Our solver will return the answer as
and
which are exact.

To do list:
1) Multiprecision (suggested by bobbym)
2) Coefficients (suggested by anonimnystefy)
3) Plotting for all variables (suggested by anonimnystefy）
4) Error message change (suggested by anonimnystefy)

Thanks again!

______________

rapidcalculator.com ---- Try out this powerful mobile computational platform!

Last edited by gauss_infinity (2012-11-01 14:33:35)

rapidcalculator.com - A powerful mobile computing platform for math and science

Offline

## #28 2012-11-01 15:36:27

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 105,294

### Re: A powerful mobile math computing platform/web tool

Hi;

Very nice capability. How did you get MathJax integrated into your page?

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
No great discovery was ever made without a bold guess.

Offline

## #29 2012-11-01 17:08:55

gauss_infinity
Member
Registered: 2012-10-23
Posts: 25

### Re: A powerful mobile math computing platform/web tool

hi bobbym,

we just followed the instructions on their webpage...

Thanks for trying our website!!!

______________

rapidcalculator.com ---- Try out this powerful mobile computational platform!

rapidcalculator.com - A powerful mobile computing platform for math and science

Offline

## #30 2012-11-01 19:25:26

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 105,294

### Re: A powerful mobile math computing platform/web tool

Hi;

You are welcome.

Okay, thanks. I will look at their site.

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
No great discovery was ever made without a bold guess.

Offline

## #31 2012-11-02 00:46:12

ShivamS
Member
Registered: 2011-02-07
Posts: 3,648

### Re: A powerful mobile math computing platform/web tool

Amazing online calculator.

Offline

## #32 2012-11-02 06:48:40

gauss_infinity
Member
Registered: 2012-10-23
Posts: 25

### Re: A powerful mobile math computing platform/web tool

Hi Shivamcoder3013,

Thanks for trying!

______________

rapidcalculator.com ---- Try out this powerful mobile computational platform!

rapidcalculator.com - A powerful mobile computing platform for math and science

Offline

## #33 2012-11-02 12:51:11

ShivamS
Member
Registered: 2011-02-07
Posts: 3,648

### Re: A powerful mobile math computing platform/web tool

No problem. It is the first online advanced calculator that I plan on being attune using that (other then when I have access to my 89 titanium or nspire).

Offline

## #34 2012-11-02 13:12:02

gauss_infinity
Member
Registered: 2012-10-23
Posts: 25

### Re: A powerful mobile math computing platform/web tool

Yup! We will be adding more features so stay tuned!

We also try to keep usage as intuitive as possible. Much of the usage patterns are actually very similar to TI-89 or softwares like MATLAB, Mathematica, Maple. The nesting of operations and command interpretation is the same, so hopefully you get used to it fast! Moreover, some heavy operations not possible on graphing calculators will be possible on this platform due to more processing power available.

__________________________

rapidcalculator.com -- Try out this powerful mobile computational platform!

rapidcalculator.com - A powerful mobile computing platform for math and science

Offline

## #35 2012-11-02 13:13:02

ShivamS
Member
Registered: 2011-02-07
Posts: 3,648

### Re: A powerful mobile math computing platform/web tool

0^0=1? Is this a glitch?

Offline

## #36 2012-11-02 13:14:11

gauss_infinity
Member
Registered: 2012-10-23
Posts: 25

### Re: A powerful mobile math computing platform/web tool

No it is not a glitch. 0^0 is indeterminate, but for most purposes any to the power of 0 is defined to be 1 so that is what we adopted as well.

rapidcalculator.com - A powerful mobile computing platform for math and science

Offline

## #37 2012-11-02 13:15:25

ShivamS
Member
Registered: 2011-02-07
Posts: 3,648

### Re: A powerful mobile math computing platform/web tool

Ah. Can you solve for x with it? Also, perhaps you should add a graphical interface. By the way, if you need some help coding it, feel free to ask.

Offline

## #38 2012-11-02 13:16:37

gauss_infinity
Member
Registered: 2012-10-23
Posts: 25

### Re: A powerful mobile math computing platform/web tool

what do you mean solve for

with it? btw thanks again.

rapidcalculator.com - A powerful mobile computing platform for math and science

Offline

## #39 2012-11-02 13:17:26

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 16,016

### Re: A powerful mobile math computing platform/web tool

Limits and random numbers would be nice to have as well...

Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.

Offline

## #40 2012-11-02 13:18:02

ShivamS
Member
Registered: 2011-02-07
Posts: 3,648

### Re: A powerful mobile math computing platform/web tool

I meant a CAS interface. Lets say you type x+2=3. Solve for x.

Offline

## #41 2012-11-02 13:18:09

gauss_infinity
Member
Registered: 2012-10-23
Posts: 25

### Re: A powerful mobile math computing platform/web tool

and yup definitely, if we need help with coding we will definitely look around here

rapidcalculator.com - A powerful mobile computing platform for math and science

Offline

## #42 2012-11-02 13:19:55

gauss_infinity
Member
Registered: 2012-10-23
Posts: 25

### Re: A powerful mobile math computing platform/web tool

yes...just do poly_x[eqsolve(x+2-3,x)]

___________

rapidcalculator.com --- try out this powerful computational platform!

Last edited by gauss_infinity (2012-11-02 13:20:12)

rapidcalculator.com - A powerful mobile computing platform for math and science

Offline

## #43 2012-11-02 13:20:36

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 105,294

### Re: A powerful mobile math computing platform/web tool

I think you should stick with 0^0 =1 . Four mathematicians and Euler define it that way.

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
No great discovery was ever made without a bold guess.

Offline

## #44 2012-11-02 13:20:41

ShivamS
Member
Registered: 2011-02-07
Posts: 3,648

### Re: A powerful mobile math computing platform/web tool

Sure. I am quite proficient in PHP and JS, so I might be able to help. Also, I have coded a few online calcs myself.

Offline

## #45 2012-11-02 13:21:29

gauss_infinity
Member
Registered: 2012-10-23
Posts: 25

### Re: A powerful mobile math computing platform/web tool

hi anonimnystefy,

yea we will put that on our list as well....

thanks!

rapidcalculator.com - A powerful mobile computing platform for math and science

Offline

## #46 2012-11-02 13:22:35

gauss_infinity
Member
Registered: 2012-10-23
Posts: 25

### Re: A powerful mobile math computing platform/web tool

hi bobbym,

yea, we were about to hardcode it to indeterminate, but then realize most books actually use 1 for it haha so that is what we default to...

rapidcalculator.com - A powerful mobile computing platform for math and science

Offline

## #47 2012-11-02 13:23:43

ShivamS
Member
Registered: 2011-02-07
Posts: 3,648

### Re: A powerful mobile math computing platform/web tool

And yes, you should add limits.

Offline

## #48 2012-11-02 13:24:35

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 16,016

### Re: A powerful mobile math computing platform/web tool

You are welcome. And thank you for putting your effort into this. I am sure it will be astonishing.

Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.

Offline

## #49 2012-11-02 13:25:46

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 105,294

### Re: A powerful mobile math computing platform/web tool

Without it defined like that the binomial theorem would have problems.

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
No great discovery was ever made without a bold guess.

Offline

## #50 2012-11-02 13:27:02

ShivamS
Member
Registered: 2011-02-07
Posts: 3,648

### Re: A powerful mobile math computing platform/web tool

Which 4 mathematicians?

Offline