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# Ildeberto de los Santos Ruiz

### Tecnológico Nacional de México

20 total contributions since 2019

Estudiante de doctorado y profesor en el TecNM, adscrito al Departamento de Ciencias Básicas del Instituto Tecnológico de Tuxtla Gutiérrez.

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Submitted

how to write a user defined function that calculates the maximum or minimum of a quadratic equation of the form
Try this: --------------------- f = @(x) x^2-5*x+6; initial = 0; fminsearch(f,initial) --------------------- To find a max...

4 months ago | 0

Why power function give a complex number result?
The "problem" appears when you raise the base (-x / x50) to power n. In IEEE floating-point computations: a ^ n = exp(n * log(...

4 months ago | 0

Haw can I calculate the difference between two points in a plot?
Try this: --------------------------------------- plot(...) [x,y] = ginput(2); % clic on each point dx = diff(x) dy = diff(...

4 months ago | 0

| accepted

Adding semicolon and comma and saving it into .txt file
Try this low-level code: ----------------------------------------- x = randi(9,[1,2*6001]); % ACTUAL DATA fileID = fopen('da...

4 months ago | 0

| accepted

Submitted

epanet_map
Draws an EPANET network in a new MATLAB figure using geographic axes and satellite maps.

Submitted

PCAMOD
Data-driven process modeling for monitoring purposes using PCA.

Submitted

getfigdata
This function extracts the x-y data from a FIG file.

Submitted

figure2pdf
Export the current MATLAB figure to a PDF file.

Submitted

Moody
Plots the Moody chart.

Submitted

Water Properties
Computes some physical properties of water dependent on temperature, from 0.1 to 100 celsius.

Submitted

Hurwitz Matrix
Computes the Hurwitz matrix for a given polynomial. The principal minors are also computed.

Submitted

Colebrook
Computes the friction factor in pipes for given values of the Reynolds number (Re) and the relative roughness coefficient (epsil...

Submitted

Sensor calibration using Procrustes analysis
Sensor calibration using Procrustes analysis (linear transformation).

Submitted

Steady-state (final) response of linear dynamic systems under constant input.

Submitted

Trapezoidal
Simulation of linear dynamic systems using trapezoidal integration method with constant time step.

Submitted

Jacobians
Linear approximation matrices of a non-linear dynamic model.

Submitted

Equilibrium Point
Equilibrium point of a non-linear dynamic system.

Submitted

Heart
Patch with heart shape.