2/27/2023 0 Comments Wolframalpha graphing![]() ![]() And even with all these functions, the calculator is solar-powered, so you don't have to worry about the battery dying in the middle of a test! It is necessary to note again that, since it's not a graphing calculator, it doesn't have actual graphing or programming functions. The display is pixel-based rather than seven-segment based in both the input and output fields, and almost all the mathematical structures are displayed symbolically: you can type in and read off expressions on the 115ES just as you would on a piece of paper. ![]() It's capable of equation solving, application of most elementary functions, numerical differentiation and integration, iterated summation and multiplication, matrix manipulation, one-variable statistics and regressions of many types, application of PDF, CDF, and inverses of normal, binomial, and other distributions, and much more. The 115ES, while being a scientific and not graphing calculator, nevertheless comes with nearly all the functionality of a graphing calculator that students typically use. If you're actually in need of a calculator for use in class and on tests, this is one that I've found to be very robust. Nevertheless, Desmos lets you very easily make quite beautiful graphs, all for free. Some of Desmos' weaknesses are its lack of 3D plotting capability, and of course that it's again a website and isn't going to be very useful on class tests. For the statistically inclined, the user can also import data and form regression graphs. Multiple graphs can depend on the same parameters, which lets you visualize how complicated systems of equations in several variables work incredibly easily. Multiple graphs of varying types can be plotted on the same axes, and non-axis variables can be introduced and modified by sliders, in a very easy-to-use and intuitive way. Though its calculation functions are limited, the graphs it produces are top-quality, better in some cases than those produced by Alpha, much less the black-white pixelated ones on the screen of a graphing calculator. ![]() Like Alpha, this isn't a program or physical calculator, but an online service available at, and also like it it's free to use. Still, for homework or for just exploration of mathematics, Alpha is an utter godsend. Finally, since it's a web service, it's not going to be of much help during in-class tests, unless your professors are much more lenient than those I've had. Some features are restricted to Pro members of the service, such as exporting graphs, and the $2.99 price tag on the app version of the service, while still an absolute steal, is incongruous with the free nature of the internet-accessible version, especially since it still has to communicate with Wolfram's servers to work. Additionally, it can be frustrating to do a large number of calculations with the service when you're somewhere with shoddy internet, since it's still hosted on the internet. ![]() Some shortcomings of the program are that, while the language processing is incredibly strong, some times it can mess up and interpret only half of the input, just because you missed a parenthesis somewhere in a long mathematical expression. The ability to be lax in what you're asking of the program and still get the answer back is incredibly relaxing, and the language processing also helps you access Wolfram's encyclopedia-like database of mathematical, scientific, and even general information. For example, I can type in "Differentiate sine of sine of x" verbatim, and Wolfram Alpha can figure out what that means, and calculate and spit back out the correct answer of cos(sin(x))cos(x). It can convert units, factorize integers, solve algebraic equations with both symbolic and numeric results, and still more, with some functions I probably haven't even seen before.īut most of all, Alpha combines all these functionalities with Wolfram Research's work on heuristic language processing, letting it "think" about what you're asking it. Moreover, it's capable of making 2D and 3D graphs, with almost all usual coordinate systems and graph types supported. This tool can conduct nearly any calculation for you, be it in arithmetic, trigonometry, calculus, or linear algebra, and it can even manipulate symbolic expressions. Accessible at for free, Alpha is one of the best mathematics services I've used, even regardless of price. ![]()
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