# ILDEBERTO DE LOS SANTOS RUIZ

### Tecnológico Nacional de México

Profesor en el TecNM, adscrito al Instituto Tecnológico de Tuxtla Gutiérrez.

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**Content Feed**

Solving nonlinear equation involving sum

It will take you a long time to evaluate the sum from n = 0 to n = 10000. You can solve it in a short time considering only fro...

3 months ago | 0

How to solve 3 simultaneous algebraic equations with a equality constraint.

You only need to express in terms of and plot that relationship: syms x1 x2 x3 t x3 = solve(x1+x2+x3 == 420,x3) EQ1 = x1 ==...

3 months ago | 0

Solved

Calculate Amount of Cake Frosting

Given two input variables |r| and |h|, which stand for the radius and height of a cake, calculate the surface area of the cake y...

3 months ago

Solved

Times 2 - START HERE

Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

3 months ago

Solved

The Birthday Phenomenon

First off, leap years are not being considered for this. In fact the year that people are born shouldn't be taken into considera...

3 months ago

Solved

Don't be mean. Be nice!

For this problem, you will be given a range of single digits R, and a separate number K. You job is to calculate the mean of al...

3 months ago

Solved

ZigZag matrix with reflected format

ZigZag MATRIX with REFLECTED format. We have only input x. We have to create a matrix in the following pattern. input n=5...

3 months ago

Solved

Find the sum of all the numbers of the input vector

Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

3 months ago

how can I plot a unit step function?

This is my proposal, I hope it helps you: u = @(t) double(t>=0); h = @(t) u(t-2)-u(t-4); fplot(h,[0,5])

3 months ago | 0

Submitted

Water Properties

Computes some physical properties of water dependent on temperature, from 1 to 99 celsius.

9 months ago | 4 downloads |

Submitted

Colebrook-White Equation

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

1 year ago | 25 downloads |

Submitted

figure2pdf

FIGURE2PDF exports the current MATLAB figure to a PDF file.

1 year ago | 6 downloads |

Solved

Pizza!

Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.] Non-scor...

1 year ago

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...

2 years 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(...

2 years 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(...

2 years 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...

2 years ago | 0

| accepted

Submitted

epanet_map

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

2 years ago | 1 download |

Submitted

Hurwitz Matrix

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

2 years ago | 13 downloads |

Submitted

Steady State

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

2 years ago | 2 downloads |

Submitted

Trapezoidal

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

2 years ago | 4 downloads |

Submitted

Jacobians

Linear approximation matrices of a non-linear dynamic model.

2 years ago | 1 download |

Submitted

Equilibrium Point

Equilibrium point of a non-linear dynamic system.

2 years ago | 7 downloads |

Submitted

Friction and Roughness

Calculate the Darcy-Weisbach friction factor and estimate the relative roughness coefficient of a pipeline.

2 years ago | 1 download |