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37
votes
3answers
2k views

Automatically check student answers in tests

I am a physics teacher and I am looking for a way to create homework assignments within Mathematica so that each problem has an input field that students can use to check their answers. For example, ...
11
votes
2answers
668 views

Difference between = and Ctrl + =

What is a difference between $\textbf{=}$, and Ctrl + $\textbf{=}$? For instance there are some examples, but result is same. and
10
votes
1answer
241 views

How can I disable the “convert to freeform linguistic input” dialog box?

So I'm putting in some function, busy typing away. Then after I've entered some text, I pause for a few seconds. In this time, the notebook pops up the question "Convert to Free-Form Linguistic ...
9
votes
5answers
6k views

Notation of partial derivative

I want to write partial derivatives of functions with many arguments. Why is it that when I type f[x,y] ctrl+6 (0,1) it turns out to be bad syntax? The output of ...
9
votes
3answers
780 views

Ctrl+= opens the alpha input instead of below-script

When trying to type "traditional style" inputs such as integrals or sums, I follow the tutorial and type Esc sum Esc   Ctrl+= n=1  Ctrl+% 10 whatever However, when I type Ctrl+= it opens ...
6
votes
1answer
261 views

Under what conditions does FinancialData return a ::notent message?

I tried retrieving FinancialData for a few companies but when I tried doing it for NTDOY, I couldn't. As of 25/12/2012, querying ...
5
votes
1answer
294 views

Using free-form linguistic input in a dynamic input field

I've been playing around with dynamic input fields; here's a basic example, which just consists of an input field where the user can enter a function and then a button that can be clicked to graph the ...
5
votes
1answer
352 views

How to import non-text data from std input in a Mathematica script?

Or maybe a better question is - how can I get a stdin stream? I need to run on Linux. I did look at Reading from STDIN, or: how to pipe data into Mathematica, but ...
5
votes
2answers
104 views

Behavior of $PreRead in Kernel

I am interested in making a simple accounting style line calculator that allows me to interact with it something like this: ...
4
votes
2answers
208 views

How to extract and assign output of Free-Form input to a variable?

Selecting a Free-Form input cell with the mouse I can query something like: convert 1 atm to pascals and get as a result ...
4
votes
0answers
355 views

Does Mathematica compute free-form-input on Wolfram servers?

I've just started to use Mathematica and I'm using the free-form input a lot. The computation time for simple problems seems to take a lot of time and my CPU isn't really used at all. I first thought ...
3
votes
1answer
74 views

How to get free-form linguistic input to act on a previous output?

It seems that Mathematica is capable of taking free-form input that acts on previous outputs (see "separate color channels"), but I'm having trouble getting it to work in my case. I've got ...
2
votes
4answers
171 views

How to limit the argument to binary type in mathematica function

How do I write a function that only takes binary input?
2
votes
1answer
451 views

How to apply a free-form input Function using InputField

I am trying to take a free-form input Function to create a list using NestList. ...
2
votes
1answer
380 views

3rd derivative keyboard shortcut

For a long time i've evaluated D[f[t],{t,3}] to get this power-like derivative thing: $$f^{(3)}(x)$$ Is it possible to obtain same through an easier keyboard ...
2
votes
0answers
127 views

Substitute for 'InputField' in Wolfram Demonstration

My application relies on the ability of users to enter text, and has several settings with a huge range of potential values best entered as strings (to comply with Wolfram's admonition to "choose your ...
1
vote
1answer
88 views

Importing data from files designated in an InputString dialog box

I want to use a loop to input several strings which will be used to import a file. The number of strings to be imported will vary, so the loop should recognize the number of strings and stop after ...