# laura bagnale

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**Content Feed**

How to solve quadratic equation in x and y?

Thank you very much for your reply, Star Strider. Sorry, I was unclear. I meant f(x,y) = 3*x^2 - 6*y^2 + 1 == 0, so I need t...

2 meses ago | 0

Question

How to solve quadratic equation in x and y?

Hello everyone, Could someone help me, please? I would like to solve this quadratic equation: f(x,y) = 3x^2 - 6y^2 + 1 and...

2 meses ago | 2 answers | 0

### 2

answersQuestion

how to create a graphic-table point correspondence

Hello everyone, I hope someone could help me with the following problem. I have a set of points with (x,y) coordinates. I plo...

3 meses ago | 1 answer | 0

### 1

answerQuestion

How to use symsum to calcolate residuals

Hello everyone! Could someone help me, please? I have these vectors: x = [0; 0; 0; 0; 1] y = [1; 0.15; 0.03; 0;...

4 meses ago | 1 answer | 0

### 1

answerQuestion

How to set a custom equation to fit 5 points in space by fitsurface?

Hello everyone, it would be very nice if someone could help me with this problem. I have a set of 5 points in space with x, y,...

4 meses ago | 2 answers | 0

### 2

answersHow to use array data for successive operations

Hi Pavan, thank you very much for your support! This helps a lot! Best Regards, Laura

4 meses ago | 0

Question

How to use array data for successive operations

Hello everyone, I hope someone could help me. I used the 'normalize' function for a set of data and then I used fitsurface to ...

5 meses ago | 2 answers | 0

### 2

answersQuestion

Normalization of poly22 fitsurface

Hello everyone, I hope someone could help me. I would like to find a way to normalize poly22. I have a set of X,Y,Z points in ...

6 meses ago | 0 answers | 0

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answersQuestion

From symbolic to numerical results for quadratic equation

Hello everyone, I hope someone could help me, I'm starting using the symbolic toolbox but I have some difficulties. I wrote ...

6 meses ago | 1 answer | 0

### 1

answerQuestion

2 variables symbolic function representation

Hello everyone! I need to represent a two variables function. From the following determinant A = I obtained the quadra...

6 meses ago | 0 answers | 0

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answersQuestion

In symbolic expression, how can I factorize terms that has common variables?

I have this expression det = I used collect but it returns the following collect(det,x) ans = So, It has been fac...

6 meses ago | 0 answers | 0

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answersQuestion

quadratic curve from matrices determinant

Hello everyone, could someone help me please? I would like to obtain the quadratic curve coming from the calculation of a 2x2 ...

6 meses ago | 0 answers | 0

### 0

answersQuestion

Optimization problem with quadratic function

Hello everyone, I hope someone could help me. This is the problem: I have 12 points which are experimental measures, represent...

6 meses ago | 1 answer | 0

### 1

answerQuestion

plot and fit surface

Hello everyone, I hope that someone can help me. I'm trying to plot several points in the space and to fit them so I can get a...

7 meses ago | 1 answer | 0

### 1

answerChange axis of fcontour plot

Thank you very much, Alan, this is very helpful! I already tried with LevelList but now all is more clear! Best Regards, La...

7 meses ago | 0

Pareto set for 2D functions

Hi Andreas, it is perfect for me, thank you very much for your support! Your answers were clear and very helpful! I really wa...

7 meses ago | 0

Question

Change axis of fcontour plot

Hello everyone, Can someone help me, please? I'm using this function fcontour(@(x,y) 3*(x+5)^2 + (x + 5)*(y - 2) + (y - 2)^...

7 meses ago | 2 answers | 0

### 2

answersQuestion

Pareto set for 2D functions

Hello everyone! Can someone help me with this problem please? I represented two functions like these: fcontour(@(x,y) 0.90...

7 meses ago | 2 answers | 0