Graph It!

Graph It! provides the user with a smooth and fast function graphing environment that utilizes the phone's processor for fast calculations.

Now compatible with Android 1.6! (Android 2.0+ required for multi-touch support)

Features:
Graph unlimited functions.
Customize display with nearly unlimited colors.
Exponentially-scaling zoom.
Touch- or button-controlled panning.
Essential graphing calculator functions: tracing, dy/dx, roots, extrema (max/mins) and intersections, all controlled by multi-touch! (See video for
example)
Populate a scrolling table for exact x-values and their matching y-values.
Shows multiple points of interest at once (unlike a normal graphing calculator's one point at a time).
Persistent graphs stored in database (functions stay after exit).
Requires no suspicious permissions, internet solely used for non-invasive ads.
Fully tested on Droid X.

Supported operations:
+, -, /, *
natural log (written as log)
exponents (^)
sin, cos, tan and their inverses
absolute value
constants: e^x (exp(x)), pi

Instructions:
1) Click "Functions" button to edit functions you want to graph.
2) Choose a color by clicking the white square.
3) Click tools button to run graphing calculations.
4) Touch the screen with two fingers to begin a calculation between them.
5) When done with a calculation, click tools button again.

YouTube Link: http://www.youtube.com/watch?v=5JNhv91VYjQ&feature=player_embedded

Tips:
Use a light color for easy readability of calculated values.
Refer to "Syntax" in the tools menu for equation entrance guidelines.

Important:
Expr lexer and parser used with permission:
Copyright 2002 by Darius Bacon <darius@wry.me>.
Uses Android Color Picker library under Apache License 2.0.

Please email any suggestions to king.appsUS@gmail.com.
Note: Please thoroughly describe any issues you have in your email or comment, including phone model and OS version. Thank you!