# Baldemy

Actif depuis 2014

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Question

How can I evaluate a multivariable symbolic function for certain input values?
For example, say I've taken the partial derivative of a multivariable expression with variables x1, x2, x3... How can I evaluate...

presque 7 ans il y a | 1 réponse | 0

### 1

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Question

Why can this linear system (Truss/global stiffness matrix, finding unknown reaction forces and displacements) be solved this way?
Overall System is F=K*u where K (symmetric, z by z, global stiffness matrix), F (z by 1, most elements(some of these are unknow...

plus de 8 ans il y a | 1 réponse | 0

### 0

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Question

Why is the polyval command giving two different answers?
Why does the polyval operator not work as expected. Is the ans variable not stored as a column vector? Why aren't the second, fi...

presque 10 ans il y a | 2 réponses | 0

### 2

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Question

Why is symsum operator giving me this answer?
I am trying to find the sum of a series that goes like 20.^-20+19.^-19+...+1.^-1 Why is the answer such a massive number and wh...

presque 10 ans il y a | 1 réponse | 0

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