Is This App Suited for Engineering Calculations

[joe]

Hello

I am considering buying Formulaic to replace PowerOne calculator for
the Palm. How well can this app handle large and small numbers? For
example:

skin_micron=sqrt(1/(pi*4*pi*1e-7*(freq_THz*1e12)*conductivity*1e7))1e6

The answer is 0.13959 for freq_THz=0.65 and conductivity=2

A similar question was listed in itunes dated 041109. Was that issue
resolved?

Can the answer be formatted in engineering notation?

Thank You

[hoymoon]

Hello Joe,

Thank you for your interest in Formulaic.

We loaded the equation you mentioned in the V2.0.2 of Formulaic, and
here is what it looks like:

Editing:

<img src="http://www.hoymoon.com/i/groups/formulaic/20090722a.png" />

The syntax is exactly what you provided, with the following two
differences: the built-in "PI" constant is in upper-case, and there's
now an explicit "*" for multiplication after the last closing bracket.

Solving for skin_micron:

<img src="http://www.hoymoon.com/i/groups/formulaic/20090722b.png" />

Solving for freq_THz:

<img src="http://www.hoymoon.com/i/groups/formulaic/20090722c.png" />

The difference in solving forward vs. backward is due to the accuracy
of inputs.

By default, Formulaic displays up to six decimal digits of accuracy,
switching to engineering notation for large or small values.

Kind regards,
Hoy Moon