# Mohammad Shojaei Arani

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**Content Feed**

Question

Multivariate Horner scheme implementation in MATLAB

Hello friends! I have very long symbolic expressions (mainly polynomials or rational types) and I need to evaluate them man...

2 mesi ago | 0 answers | 0

### 0

answersQuestion

PP form for the reverse function (not inverse function)

Hello friends! Consider a pp form for a set of (x,y) data points. Imagine now that we wish to find the pp form for the (x,1/y) ...

3 mesi ago | 0 answers | 0

### 0

answersQuestion

Find constants in a symbolic vector

Hello friends! I have a simple question but found it difficult to come up with a perfect answer. I explain by a simple example....

3 mesi ago | 1 answer | 0

### 1

answerQuestion

Suitable input for a function handle

Hellow friends, I need to do something which I explain through a simple example. Consider the following F=@(x,y,z)[x.*z.^2.*y;...

3 mesi ago | 1 answer | 0

### 1

answerQuestion

I cannot remove 0 elements of a symbolic array

Hello friends! Consider the following commands syms x sigma(x) par=sym('par%d', [1 2],'positive'); sigma(x)=par(1)+par(2)*...

4 mesi ago | 1 answer | 0

### 1

answerQuestion

Replace powers with a sequence

Hello friends! Consider a binomial symbolic expression like (x-1)^3 and a symbolic vector e of size 3 (e=sym('e',[1 3]) ). Of ...

4 mesi ago | 1 answer | 0

### 1

answerQuestion

Subs does not do the job

Hello friends! I do not understand why in my code (see bellow) the command 'subs' does not through ant error and at the same ti...

4 mesi ago | 1 answer | 0

### 1

answerQuestion

Perhaps a bug in matlab?

Hello friends! I think I have encountered a bad issue about matlab, perhaps it is a bug. Consider the following commands >> sy...

4 mesi ago | 1 answer | 0

### 1

answerQuestion

PP form for griddedInterpolant

Hello friends! This morning I was going to use interp1 but noticed that matlab is going to remove it soon. Instead, they recom...

4 mesi ago | 1 answer | 0

### 1

answerQuestion

Vectorizing a function handle with some constant inputs

Hello friends! I have an annoying problem and need your kind help! Suppose that I have a symbolic vector like f = [x+y;0;x.*y;...

4 mesi ago | 0 answers | 0

### 0

answersQuestion

How to turn a function handle with 3 inputs (1 variable and 2 parameters) and then assign the inputs parameters and get a function handle with one input? ?

Hello friends! Consider the following y=1;z=1; f=@(x,y,z)x+y+z; Now, I would like to create another function handle which is...

4 mesi ago | 3 answers | 0

### 3

answersQuestion

A very strange problem

Hi friends! After spending an hour on a seemingly simple problem I was not able to figour out what is wrong and this is why ...

4 mesi ago | 3 answers | 0

### 3

answersQuestion

A simple algebraic which I failed to do

Hello friends! Unfortunately, I have to tell you that I am unable to do a simple math I learned at intermediate school in mat...

5 mesi ago | 1 answer | 0

### 1

answerQuestion

How to tell vpa command to consider digits after decimal point' only?

Hello friends, I have a simple question, I think! I have a symbolic expression S with numeric coefficients. I need to round the...

5 mesi ago | 1 answer | 0

### 1

answerQuestion

A simple algebraic calculation does not work properly!

Hi friends! I have been strugling to tell matab to do a simple calculation for me but I failed, unfortunately. I explain my pro...

5 mesi ago | 2 answers | 0

### 2

answersQuestion

Manipulating a text file without using symbolic engine

Hello friends! I have extremely long algebraic expressions saved as text files. I need to asign 0 to some variables in the text...

5 mesi ago | 1 answer | 0

### 1

answerQuestion

Collect does not do the job

Dear friends, I have a simple question but after spending an hour I could not figur out how to fix it. So, apologies if this ...

6 mesi ago | 1 answer | 0

### 1

answerQuestion

How to do symbolic interpolation in matlab?

Hellow friends! I need to do symbolic interpolation in matlab but after spending a day I had no success. You might say why I...

6 mesi ago | 1 answer | 0

### 1

answerQuestion

Does anybody know how to calculate self-calling differential operators fast?

Hello friends, I have a code with a for-loop where inside the for-loop there is a differential operator which uses a function, ...

6 mesi ago | 0 answers | 0

### 0

answersQuestion

How to tell matlab to, instead of throwing an error message, give me a Boolean (e.g., 0 means I get error) when I try to use Horner command

Hello friends, In my code I need to know beforehand whether matlab can calculate Horner representation for my polynomial. Somet...

7 mesi ago | 2 answers | 0

### 2

answersQuestion

How to tell an multi-output anonymous function to vectorize its output components which are constant

Hello friends, I have an apparently simple but very annoying problem. Consider the function handle f=@(x,y) [x+y;2;x*y;x^2-1...

7 mesi ago | 1 answer | 0