# All Questions

70 views

### Integration is unevaluated analytically after a variable removed

I am using Mathematica 9.0 to do a symbolic integration as follows: ...
198 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. ...
142 views

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

I have a list of coordinates (coord): ...
166 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 ...
71 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 ...
47 views

### Odd behavior of FindFile

Running FindFile gives some odd results on my machine: FindFile["HTTPClient"] Result: ...
137 views

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92 views

### Part specification error with InterpolatingFunction when generating a Markov Modulated Poisson Process

I want to create a Markov Modulated Poisson Process, where the arrival rates created by the states of a ContinuousMarkovProcess are fed into an ...
244 views

### How do I get the adjacency Matrix from a random graph [closed]

I am using the command g = RandomGraph[{8, 13}]; GraphPlot[g, VertexLabeling -> True] to plot a random graph with n nodes and l edges. Once the program has ...
115 views

### Plot a function based on the value of another function

Could anyone guide me on how to plot the function VR with the values of ρ that I get from solving the following eq. ...
284 views

### Handy / flexible directory tree operations

Is there any shorter / more handy / more flexible way to get directory tree as a nested Rules/Associations list? I tried to incorporate ...
52 views

### Conditional Drop of a Key based on a test of the Value

I want to restructure a simple dataset. ...
81 views

### Symbolically solve system of equations involving matrix

I need to solve the following system of equations symbolically for a_i, b_i, and c_i: ...
55 views

### Some unexpected behaviour with StyleKeyMapping

Start with a fresh front end & kernel. The expected behaviour with an Input cell should be like this: Input 1and delete ...
127 views

393 views

### Get constant term with Coefficient` for a non-polynomial

Take a nonlinear equation such as exp = (x + 3)/4 + Exp[x] + 1 + (c + x) Note that this is not a polynomial. Now, I want to extract the coefficients of this. ...