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# All Questions

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### A question regarding 3D plot

Updated I have an equation: $x (z \ln z) = y$. For different values of $x$ and $y$ we can solve this equation for z, for example, for $x = 3$ and $y =1$, we have: ...
1answer
59 views

### How to substitute by NDSolve solution to plot a new function

Assume I got some function by NDSolve , like y(t) ...
0answers
55 views

1answer
56 views

### Performing a FindRoot from Numerical integration

I am trying to evaluate: FindRoot[Xfnew[γ, w, Hi, mx]*92*10^23*γ^(4/(1 + w)) == 1198/10000, {Hi, hs}, MaxIterations -> 10000] for some starting value hs,...
1answer
192 views

### Solve equation: Exponent is out of bounds for function PolynomialGCD

I am trying to solve the equation below but it returns this error :Exponent is out of bounds for function PolynomialGCD". I would be gratuful if you someone help to solve this equation. ...
2answers
58 views

### How to plot Implicit function Exp^(-ArcTan[y/x]) * Sqrt[x^2 + y^2]==C , for example, C -> Range[-12, 12]?

I tried many functions to plot implicit function: Exp[-ArcTan[y/x]] * Sqrt[x^2 + y^2]==C Does anyone have an idea how to do that ? (This is General Integral of ...