# About scientific notation

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**1**of**1**## About scientific notation

Hello.

I'm new user of Smart Math Calculator (free pack).

I was calculating the mass of a part (volume × density) with the following expression:

488.5*pi/4*25*7.85E-3

But the result is n/a. Plese, could you to explain me how is the right method to write the expression.

Thank you,

Best regards,

Estrongest

Country: Venezuela

I'm new user of Smart Math Calculator (free pack).

I was calculating the mass of a part (volume × density) with the following expression:

488.5*pi/4*25*7.85E-3

But the result is n/a. Plese, could you to explain me how is the right method to write the expression.

Thank you,

Best regards,

Estrongest

Country: Venezuela

**Estrongs**- Guest

## Re: About scientific notation

You can't type 7.85E-3 in this form, you must use 7.85*10^(-3) instead.

So:

488.5*pi/4*25*7.85*10^(-3)

In the next release we will hopefully add the feature to recognize the scientific forms of numbers.

So:

488.5*pi/4*25*7.85*10^(-3)

In the next release we will hopefully add the feature to recognize the scientific forms of numbers.

## Re: About scientific notation

there should also be the possibility to type a sqrt for the square root, because most equations come in this form it is annoying to replace them with the √ sign and then replace it back before sharing the equation (in most boards √ turns to v)

**Yukterez**- Posts : 22

Join date : 2011-08-03

## Re: About scientific notation

by the way and back to topic, i always use the form

488.5*pi/4*25*(7.85E-3)

(it aso works to put the E in a ()

488.5*pi/4*25*(7.85E-3)

(it aso works to put the E in a ()

**Yukterez**- Posts : 22

Join date : 2011-08-03

## Re: About scientific notation

That's a good idea. I will add it to out to do list.Yukterez wrote:there should also be the possibility to type a sqrt for the square root, because most equations come in this form it is annoying to replace them with the √ sign and then replace it back before sharing the equation (in most boards √ turns to v)

Meanwhile there is a simple way that allows you to do that yourself. Simply add the following function to the global library of Smart Math Calculator:

sqrt(x)=√x

This way everytime you type sqrt(x) it will be same as typing √x

## Periodic Notation

is there any notation for periodic numbers like 1/7 = 0,¯142857 or 0,

__142857__, or do I have to type 0,142857142857142857142857142857 etc if I don´t know the fraction value ?**Yukterez**- Posts : 22

Join date : 2011-08-03

## Re: About scientific notation

You would have to type it (copy and paste would be easier naturally).

I'm not sure how often people need this kind of fractions but if there is demand for it I can add it to a future version.

I'm not sure how often people need this kind of fractions but if there is demand for it I can add it to a future version.

## Re: About scientific notation

Where is this global Lib ?Admin wrote:Meanwhile there is a simple way that allows you to do that yourself. Simply add the following function to the global library of Smart Math Calculator:

sqrt(x)=√x

This way everytime you type sqrt(x) it will be same as typing √x

Screenshot of my directory: http://666kb.com/i/byeqt4dkeztoyqkqt.jpg

**Yukterez**- Posts : 22

Join date : 2011-08-03

## Re: About scientific notation

Hi Yukterez,

The file that contains global function definitions are saved here:

C:\Users\YOUR_USER_NAME\AppData\Roaming\Runiter\Smart Math Calculator\Functions.cfg

The file that contains global function definitions are saved here:

C:\Users\YOUR_USER_NAME\AppData\Roaming\Runiter\Smart Math Calculator\Functions.cfg

## Re: About scientific notation

Admin wrote:Hi Yukterez,

The file that contains global function definitions are saved here:

C:\Users\YOUR_USER_NAME\AppData\Roaming\Runiter\Smart Math Calculator\Functions.cfg

but when i go there i have only 3 files in that directory:

http://666kb.com/i/byevqt39wfqa061xd.jpg

sorry for bothering, but i always get the formulas with sqrt and my notepad++ doesn´t save the root symbol either (converts it into a v)

**Yukterez**- Posts : 22

Join date : 2011-08-03

## Re: About scientific notation

That's probably because your global function list is empty.

Did you add a new function to your function library?

Did you add a new function to your function library?

## arcosh / acosh

No, I didn´t

But by the way you should add a arcosh (sometimes called acosh, not to be confused with acos) function so i can solve

cosh(a)=b

a=acosh(b)

Now I have to type

arcosh(x) = ln(x+√(x^2-1))

but unfortunately the "LN" fuction has that speed bug (:

But by the way you should add a arcosh (sometimes called acosh, not to be confused with acos) function so i can solve

cosh(a)=b

a=acosh(b)

Now I have to type

arcosh(x) = ln(x+√(x^2-1))

but unfortunately the "LN" fuction has that speed bug (:

**Yukterez**- Posts : 22

Join date : 2011-08-03

## another few questions

I duplicated another cfg File and filled in sqrt(x)=√xAdmin wrote:That's probably because your global function list is empty.

Did you add a new function to your function library?

http://666kb.com/i/byeyceryu8kc9winu.jpg ← Sreenshot

but it doesn´t work

Of course I closed the smc and reloadet it, but doesn´t work...

I had to save the cfg file to Unicode, ANSI didn´t take the root symbol

maybe that´s why it doesn´t work ?

when I get it to work, will it also be possible to define new variables like y=123 etc ? do i seperate the functions or variables by comma or enter ?

**Yukterez**- Posts : 22

Join date : 2011-08-03

## Re: About scientific notation

Ok I now addert a new "Functions" Entry with function with field "Function": sqrt(x) / "Description": √x

which didn´t work, so I deleted the entry but there was a new "Functions.cfg" where I pasted the entry you suggested:

sqrt(x)=√x

I had to save the file in Unicode again instead of the old ANSI format because of the symbol, but it still doesn't work:

>> http://666kb.com/i/byf6jixeivcpg8nzu.png << Screenshot

which didn´t work, so I deleted the entry but there was a new "Functions.cfg" where I pasted the entry you suggested:

sqrt(x)=√x

I had to save the file in Unicode again instead of the old ANSI format because of the symbol, but it still doesn't work:

>> http://666kb.com/i/byf6jixeivcpg8nzu.png << Screenshot

**Yukterez**- Posts : 22

Join date : 2011-08-03

## Re: About scientific notation

oh no, you should never edit the Function.cfg file!!

When you create a new Function, type the entire expression sqrt(x)=√x in front of "Function:"

You don't need to type anything in "Description" field.

When you create a new Function, type the entire expression sqrt(x)=√x in front of "Function:"

You don't need to type anything in "Description" field.

## Re: About scientific notation

Thanks a lot ! Now I also was able to define

acosh(x)=ln(x+√(x^2-1))

and all the kilometerlong time variables that define some giga light years in meters and such like the time since the big bang in seconds etc (: that will save me a lot of work, even if it was some work to figure out how to do so (:

acosh(x)=ln(x+√(x^2-1))

and all the kilometerlong time variables that define some giga light years in meters and such like the time since the big bang in seconds etc (: that will save me a lot of work, even if it was some work to figure out how to do so (:

**Yukterez**- Posts : 22

Join date : 2011-08-03

## Re: About scientific notation

It's good that you brought this to my attention.

Perhaps adding new function is not as obvious as it should've been. I will make some improvements in the user interface in the next release.

Perhaps adding new function is not as obvious as it should've been. I will make some improvements in the user interface in the next release.

## another suggestion

in the next update maybe you should add a dialogue field when one klicks on the delete a function button (the minus sign) - it is too close to the add (+) and edit (i) button, i already deleted a bunch of functions (good that i made a backup in the forum so i could easily restore them) (:

**Yukterez**- Posts : 22

Join date : 2011-08-03

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