【實用生產應用app】Graph It!|最夯免費app

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!

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