Welcome to blog entry # 69: Happy Easter to Everyone!**Review: iMathPac by Mobile Electronics**

Platforms: iPhone, iPod Touch, iPad (can be zoomed)

Cost: Free

Link: Mobile Electronics Website

Location of Company: Central Florida

iMathPac is an app that features a scientific calculator and a graphing application. The features iMathPac have are:

* Trigonometry

* Angle Modes included are Degrees and Radians

* Factorial for ** any ** number, not just integers

* Permutations and Combinations

* Full complex number support (rectangular notation only)

* Graphing of functions, inequalities, and inverse functions.

* One touch conversion between fractions and decimal approximations

Below are some screen shots of this powerful and free calculator.

**Notes:**

* The numeric keypad is in the layout of a phone, which is opposite of the key layout on most calculators.

* There is no shift key, which I believe is by the company's design.

* The e key enters the constant e = 2.17828182845905 (to 16 decimal places). To use the exponential function, just press the e key then the ^ key.

* If you press the 1/x, "^(-1)" will be attached to the end of expression.

* Complex number calculations include trigonometric (watch the angle mode), logarithmic, powers and roots, and exponential - which is really nice!

* There is no "EE" key, so you have to enter large exponents as such: nnnn*10^(xxx)

* The minus key, -, acts as both the negation key and subtraction. In calculators with algebraic systems, I prefer this to having separate keys for negation and subtraction.

* The gamma function can be calculated using the factorial: Γ(x) = (x-1)!

* The absolute value (abs) and floor function (||x||) are available in graph mode only. I do believe the graph mode operates in Radians mode only.

* Tap on the graph to find the value of all functions. Pinch to zoom (not perfect). **What I Love about this App**

* Full complex number support - and yes I am a big fan of this

* The factorial function is not restricted to integers - I am also a big fan

* The screen looks sweet, well use of color

* The ability to graph inequalities and inverse functions

* Who can beat free? A lot of features for a free calculator. **What Could be Improved**

* No memory, store, and recall. This could be helpful in complex calculations.

* There is no fixed decimal mode settings.

* You can copy expressions, but where to paste them? **Recommendation**

iMathPac is a free, powerful calculator, with a lot of powerful features. It is a nice scientific calculator with great graphing capabilities. Definitely worth the download.

Rating: *** * * * * (out of 5)**

This blog is property of Edward Shore. © 2012

Good points on the calculator app. I know of http://www.omerusapp.com. It allows for multiple projects to be worked on. Give it a try.

ReplyDeleteGood points on the calculator app. I know of http://www.omerusapp.com. It allows for multiple projects to be worked on. Give it a try.

ReplyDelete