![]() Now let's look at another function.The study investigated the effect of exploratory computer-based instruction on pupils’ conceptual and procedural knowledge of graphs, and the affective issues towards the use of computers in mathematics. This means that we can easily read the values of the maxima or minima of the function under study and determine? rude of course? the coordinates of the points at which the function takes these values. When do we hover over the graph? like a crosshair? the coordinates of the specified point are changed in the lower status bar. Here is an example let's look at the variability of the function y = exp (sin (x) +1: after pasting the expression describing the function into the box at the top and pressing Enter, I had to rescale the plot to make the properties of the function in question more readable, I did this by clicking on the box right click on the graph and select Zoom Out from the popup menu, I could get the same effect by clicking the magnifying glass icon with a minus inside in the toolbar.Now suppose I want to stabilize my function, there is nothing easier, just one click on the icon marked with red arrow, and on the right we have a stabilized function: And that's a strong word: you just enter the function you're learning in the form y = f(x) (y = never forget) or an expression like f(x) > g(x) when we want to solve an inequality problem. I specifically noted this, because this is where the program is indicated. The red outlined area is shown at the top of the figure. ![]() and changed the marking of the axes The axis names are in I like Georgia font, and it's worth adding that I had to select the Middle European script in the font selection box, otherwise the Polish diacritics could not be used. Here are the workspace design choices I made:Īs you can see, I removed the grid points, left the default (rectangular) coordinate system with the block size, color and axis thickness suggested by the program, and gave the window the name "Test Plot". I suggest that those who wish to try the possibilities offered by Graphmatics, they are quite large. In the "Options / Settings" menu, you can also select the line thickness of the graph, name the coordinate axes somehow, set the base of the logarithm (by default we use decimal logarithms), name the drawing and format it correctly, select the calculation accuracy, select the integration method, and etc. You can change a lot of this view to suit your preferences (or needs) in particular, it is possible to use a polar coordinate system instead of "normal?" rectangular, you can also use logarithmic scale functions to plot as well take? which of course facilitates the drawing of graphs of trigonometric functions? as axial units, multiples of pi the choice is made from the menu Options / Millimeter paper. It is available in several languages, but unfortunately Polish is not among them Therefore, we will choose the English version for further consideration.Īfter the hassle-free installation is complete, by launching Graphmatica in the usual way, we will see the working screen:Īs you can see, we have a fragment of a Cartesian plane with a coordinate system and marked grid points. It's an amazingly small program for a lot of features (the installation package weighs only 376 KB) and? certainly ? therefore extremely fast in action. ![]() variability of functions of one real variable and for graphical solution of inequalities, finding tangents, calculating derivatives and integrals. One of my favorites is Keith Herzer's rather old program Graphmatica (current version 2.09g for Windows 2009, updated January 2010, downloadable from ) mainly for research. Apart from Microsoft Math, a great free math program that I've been discussing here for months now, there are surely many others with similar features? all or some of them.
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