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# Questions tagged [error]

Questions seeking help understanding error messages and fixing errors.

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122 views

### Plotting a list of “Numerical” functions

In expressions like Plot[Through@{# &, #^2 &}@x, {x, -1, 1}] Plot effectively interprets the first argument as a ...
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My code is: ...
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### Plotting a two parameter function evaluated at a specific point

I am trying to solve the following problem: given the differential equation $$\frac{d^2y}{dx^2}+\bigg(a+b\frac{2}{\pi}\tan^{-1}x\bigg)y=0$$ subjected to two different initial condition we get two ...
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### Error message when trying to solve 2 coupled PDEs using NDSolve

I'm currently facing a problem when trying to solve 2 coupled PDEs. I get the warning messages: NDSolve::fembdcc: Cross-coupling of dependent variables in DirichletCondition[IPF==IPB/10,z==5.] is not ...
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### Singularity or stiff system in NDSolve

I have the following piece of code ...
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### Why does this stiff BVP return unevaluated but a similar IVP produce a solution?

In Solving a steady-state viscous Burger's equation with NDSolve, one question involves the following problem: ...
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### Compiling simple parallel function gives inconsistent results and errors

Im trying to compile the following function: ...
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### Why is “1” not a valid variable? Why is there not a function plotted in the Plot function? [duplicate]

This is my code for playing this kind of stuff ...
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### Mathematica Error Message Help [duplicate]

when using NMaximize[], I keep getting the following error message: Can someone please explain what <<99>> + <<86>> = 0 means?
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### FindMaximum error (not a real number)

For the code below, I get several error messages once I click the "Enable Dynamics" button. However, once I run the code, the output works fine, so, if that is all I wished to do, I would just live ...
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### Having trouble with Part

I'm very new to Mathematica. I'm just trying to plot some data, but Mathematica says there isn't a 7th element my data which is an array of 7 elements. The code before the plot is here: ...
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### Need help with the “step size is effectively zero; singularity or stiff system suspected” message

I'm trying to solve a system of ODEa, and I always get a message saying NDSolve::ndsz: ..step size is effectively zero; singularity or stiff system suspected. I tried ...