Solve2Go - supports solving equations and inequalities by means of conjectures based on visual thinking. Conjectures can be refuted or supported by examples provided by the tool, and should be proved using symbolic manipulations on paper.
Equations: when we want to know for which values of x the two functions are equal.
Inequalities: when we want to know for which values of x one function is greater than the other.
When the two functions involved are linear, we call the comparison a linear comparison. When at least one of the functions is not linear, we refer to a non-linear comparison. Non-linear comparisons form a wide and rich field of study.
Users specify two function expressions by choosing each expression from a list of given parametric function expressions. Solve2Go randomly chooses numeric values for the parameters and graphs the two functions. It also marks points of intersection when they exist and are visible on screen.
To explore solutions of other equations or inequalities of the same (selected) type, it is recommended to use the interactive change of the constants and coefficients in each expression, transform the graphs, and view whether and how solutions are changing. The design of Solve2Go is based on the special features of Graph2Go.
Create a Gallery
Use Solve2Go to examine different common positions between a quadratic function and a linear function, and between two quadratic functions. How would you present a "gallery" of different comparisons to give a "visitor" a general picture of various possible types of comparisons?
Consider the following properties of comparisons:
* The type of functions compared (quadratic, linear, constant, increasing).
* The type of comparison (equation, inequality).
* The nature of the set of solutions (no solutions, a single solution, several solutions, an interval of solutions, several intervals of solutions).
For more investigations about solutions by means of function comparisons click here.
Requirements:· Java Enabled (J2ME) Phone - Profile/MIDP-2.0 Configuration/CLDC-1.1
· Screen Resolution: 128 x 96 and above
Other Java Freeware of Developer «Math4Mobile»:
Fit2Go Fit2Go supports exploration and modeling activities. It supports data collection by proposing a model that can appropriately describe the user's data. The tool highlights the numeric aspects of a phenomenon. Together, Sketch2Go and Fit2Go provide a comprehensive view of models and modeling
Quad2Go Quad2Go - Explorations with Quad2Go are especially appropriate for 11-12 year old students. Teaching geometry to students of this age focuses on the critical attributes of quadrilaterals and on the hierarchical relations among them. Learning means identifying critical attributes and non-critical attributes
Graph2Go Graph2Go - Graphing calculators are instrumental in teaching and learning mathematics. It is an environment that supports conceptual understanding of functions in general, and school algebra and real analysis in particular. Especially, it enhances connections between graphic and symbolic representations
Sketch2Go Sketch2Go - encourages visual exploration of phenomena by providing qualitative indication of the ways in which the sketch drawn by the user changes. The sketch is a diagrammatic representation that attempts to help the viewer focus on the principles rather than on tedious details of the represented phenomenon. Phenomenon can refer to processes outside of mathematics (e
x_calc Universal free, every day use calculator with scientific features. One of top.
Good for simple and advanced calculations!
Scientific Calculator 3D Turn your mobile into an advanced scientific calculator, plot any function you want in 2D or 3D and evaluate its critical points
HorsePower HorsePower is J2ME scientific calculator optimised for use on mobile phones, with the appearance of the classic range of Hewlett Packard calculators (MIDP 1.0 and CLDC 1.0)
Complex Numbers Calculator Using the complex numbers calculator the answers to algebra problems covering this topic is only as far as your mobile phone
EasyCalcBasic EasyCalcBasic - A very simple calculator.
Enter a list of up to 10 numbers, add labels.
Comes with hyper-intelligence:
You can write *,x,/,div,divide,subtract,plus,minus,times,takeaway, or pls,tms,add...you will still get the same result
RZCalculator This calculator for java mobile phones can calculate binary, octal, decimal, hex numbers and convert it to each other. It supports logical expressions, parenthesisses, memory and 64bit integer arrithmetics. Operator precedence as in C++, C#, C, Java