# All Questions

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### Attributes of statistics functions

Do statistics functions have some kind of attribute which ignore non-number (Indeterminate, ComplexInfinity, calculation "errors") elements of a list?
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### Error when using NDSolve in SIR model

I have the following code for a SIR model: ...
38 views

### Button labels in different platforms

if someone has Mathematica on a mac or a Linux system, could you please evaluate this code: ...
43 views

I created TOC programatically using instructions from http://reference.wolfram.com/language/AuthorTools/tutorial/MakeContents.html But it created second notebook TOC.nb. Is it possible to create ...
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### NDSolve::bcsol?

I'm writing a code to numerically solve a differential equation. It has to repeat the process several times since there is a variable involved which is unknown, and the equation is fit to some ...
91 views

### Mapping Images in Parisian metro stations

One particular aspect of some Parisian metro stations is that stations' walls are curved, even in the sides where one would place advertising posters. Here is a picture of one such station: I was ...
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### Shortcut to call recent inputs

I am familiar with CTRL+Shift+L to call the last input; however, in the case that I want to, for ease-of-comparison, want to print outputs of a command from further in the past and don't remember ...
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### Integration is unevaluated analytically after a variable removed

I am using Mathematica 9.0 to do a symbolic integration as follows: ...
167 views

### Plotting a pencil of lines

I want to plot a pencil of lines between line1 and line2 using a formula (alfa*(ax+by+c)+beta*(a1x+b1y+c1)), but it doesn't show me anything. ...
98 views

### How to take dot product of every element in a list?

I have a list of coordinates (coord): ...
51 views

### Simulation of LogNormal process for an asset pricing

I'm new to Mathematica programming, so forgive my rather unsophisticated question: I need to simulate 5000 "walks" of a process value (of a stock) that starts from its current value, at t0, and ends ...
41 views

### Strange long time evaluation of Series for fractional function

my problem concerns the Series command applied to a product of a rational function times a square root. This can be exemplified in the following way ...
34 views

### Odd behavior of FindFile

Running FindFile gives some odd results on my machine: FindFile["HTTPClient"] Result: ...
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### NIntegrate evaluating to “non-numerical values” for some input values despite using ?NumericQ

I'm quite new to Mathematica and I'm finding myself wanting to compute an integral for which my code produces errors of the kind: "NIntegrate::inumr: "The integrand ... has evaluated to ...
40 views

### Create trading chart from Bloomberg historical data

I am using Mathematica 9 with the Finance Platform, and have pulled historical data for the Bloomberg Commodity Total Return Index using the following code. ...
46 views

### non linear Least Squares with model function given by ODE's

I have to fit to experimental data a model function given by a linear combination of functions y1(t) and y2(t) a1*y1(t) + a2*y2(t) with a1 and a2 ...
76 views

### Need help with code for number theory problem

I'm completely new to Mathematica (used previously only for very simple cases). I need to write a quite complex function. The function must do the following: Input consists of two numbers: a and b. ...
40 views

### Indeterminate expression 0(I*Infinity]) on indefinite integrals on first use only

I do not know if this is new or not, I googled before. Windows 7, 10.1 64 bit: Integrals generate this error message The strange thing also is that the message shows up the first time the command ...
72 views

### Can Mathematica Find Closed-Form Solution this Equation

I have tries to solve an equation by using Solve[] to find pl as a function of other variables. However, it generates an Error! Can anyone help? ...