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I was trying to make a simple calculation program for trigonometry with right angled triangles given the possible values of "x", "none", and two others with numbers. I know about the functions math.cos(), math.sin(), etc. but they are giving me different numbers from what my calculator is giving me.Here's an example of some of the code I was trying to use:

For those unfamiliar with SMath/mathCAD, it provides easy display of math formulas where you can define variable values and have it auto-populate answers from equations, while commenting inline to explain what you are doing. It lets you work with matrices, easily and perform calculations without the sloppiness of Excel or typing things into a calculator. It is easy to copy and paste formulas between sheets to run the same calculation type for multiple projects.

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I think at the risk of emacsifying Obsidian a bit-- it would be awesome to have a simple core calculator plugin, that can be used in a small pane off to the side, actually. Would boost my productivity by a ridiculous amount. And also help people with disabilities not have to switch screens to use a calc app or browser.

You can use the fp package (\usepackage[options]{fp}) the floating point package will do anything you want; solving equations, adding dividing and many more. Unfortunately it will not read the LaTeX math you instead have to do something a little different, the documentation is very poor so I'll give an example here.

Considering that LaTeX itself is a Turing-complete markup language I strongly doubt you can build something like this that isn't built directly into LaTeX. Furthermore, LaTeX math matkup itself has next to no semantic meaning, it merely describes the visual appearance.

That being said, you can probably hack together something which recognizes a non-programmable subset of LaTeX math markup and spits out the result in the same way. If all you're interested in is simple arithmetics with fractions and integers (careful with decimal fractions, though, as they may appear as 3{,}141... in German texts :)) this shouldn't be too hard. But once you start with integrals, matrices, etc. I fear that LaTeX lacks expressiveness to accurately describe your intentions. It is a document preparation system, after all and thus not very suitable as input for computer algebra systems.

For performing the math within your LaTeX itself, you might also look into the pgfmath package, which is more powerful and convenient than the calc package. You can find out how to use it from Part VI of The TikZ and PGF Packages Manual, which you can find here (version 2.10 currently):

You are right. LaTeX as it is does not provide enough info to make any calculations.Moreover, it does not represent any information to do it. But nobody prevents to wright in LaTeX format a text that contains such an information.It is a difficult path, because you need to build a system of rules superimposed on what content ofthe text in Latex format needs to contain that it would be recognizable by your interpreter. And then convince the user that it is necessary to learn, etc. etc...The easiest way to create a logical and intuitive calculator of mathematical expressions. And the expression is already possible to convert latex. It's almost like what you said. This is implemented in the program which I have pointed to. AnEasyCalc allows to type an expression as you type the plane text in any text editor. It checks, calculates and generate LateX string by its own then. Its very easy and rapid work. Just try and you will see that.

The snippet above only handles basic algebraic simplification (math expressions without variables). Since the library converts LaTeX math to SymPy objects, the above code can easily be tweaked and extended to handle much more complicated LaTeX math (including solving derivatives, integrals, etc...).

Our calculator allows you to check your solutions to calculus exercises. It helps you practice by showing you the full working (step by step integration). All common integration techniques and even special functions are supported.

First, a parser analyzes the mathematical function. It transforms it into a form that is better understandable by a computer, namely a tree (see figure below). In doing this, the Integral Calculator has to respect the order of operations. A specialty in mathematical expressions is that the multiplication sign can be left out sometimes, for example we write "5x" instead of "5*x". The Integral Calculator has to detect these cases and insert the multiplication sign.

When the "Go!" button is clicked, the Integral Calculator sends the mathematical function and the settings (variable of integration and integration bounds) to the server, where it is analyzed again. This time, the function gets transformed into a form that can be understood by the computer algebra system Maxima.

Maxima takes care of actually computing the integral of the mathematical function. Maxima's output is transformed to LaTeX again and is then presented to the user. The antiderivative is computed using the Risch algorithm, which is hard to understand for humans. That's why showing the steps of calculation is very challenging for integrals.

In order to show the steps, the calculator applies the same integration techniques that a human would apply. The program that does this has been developed over several years and is written in Maxima's own programming language. It consists of more than 17000 lines of code. When the integrand matches a known form, it applies fixed rules to solve the integral (e. g. partial fraction decomposition for rational functions, trigonometric substitution for integrands involving the square roots of a quadratic polynomial or integration by parts for products of certain functions). Otherwise, it tries different substitutions and transformations until either the integral is solved, time runs out or there is nothing left to try. The calculator lacks the mathematical intuition that is very useful for finding an antiderivative, but on the other hand it can try a large number of possibilities within a short amount of time. The step by step antiderivatives are often much shorter and more elegant than those found by Maxima.

The "Check answer" feature has to solve the difficult task of determining whether two mathematical expressions are equivalent. Their difference is computed and simplified as far as possible using Maxima. For example, this involves writing trigonometric/hyperbolic functions in their exponential forms. If it can be shown that the difference simplifies to zero, the task is solved. Otherwise, a probabilistic algorithm is applied that evaluates and compares both functions at randomly chosen places. In the case of antiderivatives, the entire procedure is repeated with each function's derivative, since antiderivatives are allowed to differ by a constant.

The interactive function graphs are computed in the browser and displayed within a canvas element (HTML5). For each function to be graphed, the calculator creates a JavaScript function, which is then evaluated in small steps in order to draw the graph. While graphing, singularities (e. g. poles) are detected and treated specially. The gesture control is implemented using Hammer.js.

Examinees taking CSET: Mathematics Subtest II must bring their own graphing calculator but may not bring a calculator manual. Graphing calculators will not be provided at the test session. Only the brand and models listed below may be used. Approved calculator brands and models are subject to change; if there is a change, examinees will be notified. Test administration staff will clear the memory of your calculator both before and after testing. Therefore, be sure to back up the memory on your calculator, including applications, to an external device before arriving at the test center.

If you have a calculator with characters that are one inch or higher, or if your calculator has a raised display that might be visible to other test-takers, you will be seated at the discretion of the test coordinator.

The Mathematics Department has voted to adhere to the following calculator restrictions on classes. All restrictions apply only to exams (there is no general restriction against calculators on homework).

ADA students with a calculator provision MUST be allowed to use calculators on every test at the most lenient level allowed regardless of the test or topics covered or whether you let other students in your class use calculators.

To fail to allow this provision is illegal and puts the instructor & school at risk for lawsuits. Adjunct faculty who fail to follow the calculator policy as described in this policy will be warned and possibly terminated if they are unwilling to comply with this policy.

Many of the courses in the University of Wisconsin-Platteville Mathematics Department require calculators. A cell phone calculator is never allowed on tests, so plan to have a calculator if your course requires one. Individual instructors may restrict the use of any type of calculator in their class.

If you are enrolling in a 1000-level course and do not already own a graphing calculator, we recommend that you wait to purchase one until after the first day of class. Your instructor will provide specific calculator requirements for that class.

Calculators with Computer Algebra Systems (CAS), such as the TI-89, TI-92 and TI-inspire with CAS keypad, or their equivalent, are not allowed in any math course. In other courses, calculators may be required but there are no specifications as to the type.

Some brands are not allowed because of capabilities that interfere with the course objectives. You should carefully check your calculator to make sure you have one on the following approved calculators:

Based on the grades/scores received on the sample tests and your accepted major (see acceptance letter), this calculator can be used to determine your likely math course placement. Input the information requested below. 2351a5e196