Math Calculator 1.0

This is the new "Math Calculator" from ClearForce Consultancy, LLC. This Math Calculator preserves math book style complex symbolic and numeric calculations. It is a culculator that not only supports functionality found in classical scientific calculators, but it also supports lots of extra features like the ones described below.

Some of the Math Calculator Features Include:
- CAS technology to preserve symbols in calculations.
- Calculation results displayed stylish like in math books.
- Multiple line input display.
- Multiple line output display.
- History table for reuse of expressions and calculations.
- Preserve exact calculations: 1/2+1/3 = 4/6.
- Complex numbers.
- Function definitions.
- Example table to get started quickly.

Some of the look and feel of the Math Calculator can be changed in the "General Settings" area of the iPhone or iPod Touch. There are 4 general setting that can be changed:
1. Pretty Print: if "Pretty Equations" is selected, equations will be displayed as in mathbooks.
2. Keyboard Audio: if "Audio On" is selected the keyboard will generate sound feedback when pressed.
3. Calculation Methed: if "Exact" is selected ratios will keep their simplified form (see above).
4. Input/Output: if "Prompt" is selected every line being displayed or created by the user will be preceded by an indexed prompt.

Description of functionality:
Del: Delete character at the cursors location
H: History Table of Inputs and Outputs
Ex: Table of examples
Approx sign: Get approximate value of calculation
ClrScr: Clear the screen and the History table
Enter: Get exact value of calculation
: Go to next line when using long calculations
Info: Display this information
Complex: Complex number Complex(a,b) = a+bi
Conjugate: Conjugate of complex number Conjugate(Coplex(a,b)) = a-bi
I: Square root of -1
Arg: Argument of complex number
Re: Real value of complex number
Im: Imaginary value of complex number
Clear: Clear defined variable
Cot: Cotangent function
Ln: Natural logarithm function
Exp: Exponent function
Sqrt: Square root function
Tan: Tangent function
Cos: Cosine function
Sin: Sine function
x^y: Power function
ArcTan: Inverse tangent function
ArcCos: Inverse cosine function
ArcSin: Inverse sine function
TanH: Hyperbolic tangent function
CosH: Hyperbolic cosine function
SinH: Hyperbolic sine function
ArcTanH: Inverse hyperbolic tangent function
ArcCosH: Inverse hyperbolic cosine function
ArcSinH: Inverse hyperbolic sine function
D: Differential operation

This Calculator is based on the Yacas engine, a Computer Algebra System or CAS. See http://yacas.sourceforge.net/homepage.html.