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### Problem finding roots [closed]

I am trying to obtain numerically the roots of a function, but Mathematica is not able to obtain them. I used NSolve, FindRoot and even the custom Jens' findAllRoots function, but none of them work. ...
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### Solve an interpolating function [duplicate]

I have been working with interpolating functions recently and have two functions as a result of an interpolation of two co-ordinate lists. The code I used: ...
166 views

### eigenvalue and eigenfunction of complex euler-bernoulli beam

So I am new to Mathematica and am trying to solve the euler-bernoulli modal equation for a U-shaped Cantilever beam given by equations :- where i is the index of the region. In total there are 2 ...
116 views

### RootSearch warning “too small to represent as a normalized machine number”

RootSearch is a package for finding all roots within a range from Ted Ersek. As I test it, it is quite robust. But I also encountered some issue that I can not resolve. I define a function ...
60 views

### Using Reduce with a Interpolation function

I am trying to find all the solutions of an equation that contains an interpolation function int, where int=Interpolation[data] (...
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### How can we deal with initial value sensitivity of FindRoot?

Recently, I have tried to find minima of some functions with FindMinimum, but those are so flat that the results cannnot be reliable. So I switched the method to ...
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9k views

### Find all roots in range

Is there any way to check for all roots in a range? Jens' findAllRoots function is pretty good, but runs at approx. 10% of roots missed when I ran a quick check on ...