All Questions

181 views

Getting $e$ closer than $0,001$?

Everyone knows that $\sum \frac{1}{n!} =e$. How should I make a program in Wolfram Mathematica, that tells me, how many members I need from the sum, to get a number, with mistake smaller, than ...
75 views

Mathematica suspends long calculation [on hold]

I have the following weird problem: I am performing some monte carlo simulations through a simple do loop, where each round takes about 1-5 minutes. I was running 1000 or so overnight, and realized ...
56 views

Function where variable is integration bound

Lets say I have a function of the form: $f(T) = T^4 \int_0^{1/T} \frac{x^3 dx}{e^x-1}$ This is an example of the situation I am describing not a unique problem. I want to define it as a numerical ...
24 views

If the pattern changes in a nested List

I have a nested list in which part 2 of each sublist repeats itself a number of times before changing, i need an if condition for when part 2 of the next sublist changes from the prevous sublist. ...
80 views

Solving cubic equation with unknown coefficients

I am trying to solve a cubic equation with unknown coefficients (p and t), here is the code: ...
158 views

How to realize a Harmonic Tool like as CorelDraw [duplicate]

I get a rectangle and a circle like following: The Harmonic Tool of CorelDraw can transition the rectangle to circle ...
303 views

How to take and evaluate a specific part of a list without evaluating the rest?

I have a large list, for example, lis = {x + y, x y, Sin[x] y + Exp[y], x^2 y} and its elements depend on variables x and ...
43 views

Building a matrix in block matrix format

Now, I'm aware of the threads existing about this question such as: How to enter matrices in block matrix format? How to form a block-diagonal Matrix from a list of matrices? But I wasn't able to ...
55 views

50 views

Cardinality of members of a list [on hold]

I have to count all the words in a book. I need the cardinality (occurrence) of all the words. {{Table,30},{the,200},{apple29}, etc... I Splitted, and StringTrimed ...
70 views

How to show formula and substitute variable values?

I'm looking for an easy way to make a 'dynamic' paper for some engineering calculations (I'm talking about hundreds of pages with lots of different formulas). The problem is hard to describe so I'll ...
79 views

Find intersections points with axes

Let's create some points corresponding to a simple closed curve ...