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Calculate a Damped Sinusoid

The equation of a damped sinusoid can be written as |y = A.ⅇ^(-λt)*cos(2πft)| where |A|, |λ|, and |f| ...

8 giorni ago

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Side of a rhombus

If a rhombus has diagonals of length x and x+1, then what is the length of its side, y? <<https://imgur.com/x6hT6mm.png>> ...

8 giorni ago

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Calculate BMI

Given a matrix |hw| (height and weight) with two columns, calculate BMI using these formulas: * 1 kilogram = 2.2 pounds * 1 ...

8 giorni ago

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How to save each loop data?

You can make a vector of points as here: c=3e8; %speed of light u=0; uv=[]; yv=[]; while u<(c) y=1/(sqrt(1-((u^2)/...

How to save each loop data?

You can make a vector of points as here: c=3e8; %speed of light u=0; uv=[]; yv=[]; while u<(c) y=1/(sqrt(1-((u^2)/...

8 giorni ago | 1

| accepted

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Dimensions of a rectangle

The longer side of a rectangle is three times the length of the shorter side. If the length of the diagonal is x, find the width...

8 giorni ago

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How to subtract?

*± ± ± ± ± ± ± ± ± ± ±* * Imagine you need to subtract one...

8 giorni ago

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Is this triangle right-angled?

Given any three positive numbers a, b, c, return true if the triangle with sides a, b and c is right-angled. Otherwise, return f...

8 giorni ago

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Side of an equilateral triangle

If an equilateral triangle has area A, then what is the length of each of its sides, x? <<https://i.imgur.com/jlZDHhq.png>> ...

8 giorni ago

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Interpolator

You have a two vectors, a and b. They are monotonic and the same length. Given a value, va, where va is between a(1) and a(end...

8 giorni ago

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Area of an equilateral triangle

Calculate the area of an equilateral triangle of side x. <<https://i.imgur.com/jlZDHhq.png>> Image courtesy of <http://up...

8 giorni ago

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Solve a System of Linear Equations

*Example*: If a system of linear equations in _x₁_ and _x₂_ is: 2 _x₁_ + _x₂_ = 2 _x₁...

8 giorni ago

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How to solve 'vector must be the same length', 'functions behave unexpectedly' errors when graphing vector equation

in the first code, instead of x=3; use this one: x=3*ones(size(t));

How to solve 'vector must be the same length', 'functions behave unexpectedly' errors when graphing vector equation

in the first code, instead of x=3; use this one: x=3*ones(size(t));

8 giorni ago | 0

| accepted

Solved

The Hitchhiker's Guide to MATLAB

Output logical "true" if the input is the answer to life, the universe and everything. Otherwise, output logical "false".

9 giorni ago

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Nearest Numbers

Given a row vector of numbers, find the indices of the two nearest numbers. Examples: [index1 index2] = nearestNumbers([2 5 3...

9 giorni ago

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Find the Oldest Person in a Room

Given two input vectors: * |name| - user last names * |age| - corresponding age of the person Return the name of the ol...

9 giorni ago

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Return the largest number that is adjacent to a zero

This example comes from Steve Eddins' blog: <http://blogs.mathworks.com/steve/2009/05/27/learning-lessons-from-a-one-liner/ Lear...

9 giorni ago

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Which values occur exactly three times?

Return a list of all values (sorted smallest to largest) that appear exactly three times in the input vector x. So if x = [1 2...

9 giorni ago

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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...

9 giorni ago

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Convert from Fahrenheit to Celsius

Given an input vector |F| containing temperature values in Fahrenheit, return an output vector |C| that contains the values in C...

9 giorni ago

Answered

Working with complex numbers in the Symbolic Math Toolbox. Why does angle(A) returns atan2(sin(alpha),cos(alpha)) instead of just alpha?

if you want to find the numerical value of alpha, one solution is to use double function: double(angle(A))

Working with complex numbers in the Symbolic Math Toolbox. Why does angle(A) returns atan2(sin(alpha),cos(alpha)) instead of just alpha?

if you want to find the numerical value of alpha, one solution is to use double function: double(angle(A))

9 giorni ago | 0

Answered

Can I save a MATLAB variable generated by a function into another MATLAB function?

You can use global variables by this line of code in all functions that share the same variables: global var1 var2 var3

Can I save a MATLAB variable generated by a function into another MATLAB function?

You can use global variables by this line of code in all functions that share the same variables: global var1 var2 var3

9 giorni ago | 0

Answered

Factorial without the Command

Using only basic operations: function f = Factorial(n) % % initial value, 0! and 1! f = 1; if n > 1 for i=2:n ...

Factorial without the Command

Using only basic operations: function f = Factorial(n) % % initial value, 0! and 1! f = 1; if n > 1 for i=2:n ...

9 giorni ago | 0

Answered

Factorial without the Command

function f = Factorial(n) % % if n = 0 || n = 1 f = 1; elseif n >= 1 f = n * Factorial(n-1); end

Factorial without the Command

function f = Factorial(n) % % if n = 0 || n = 1 f = 1; elseif n >= 1 f = n * Factorial(n-1); end

10 giorni ago | 0

Answered

Loop for creating Submatrix

It should not be two nested loops. You can use one loop that increases a counter. You can use this code that doesn't need a loo...

Loop for creating Submatrix

It should not be two nested loops. You can use one loop that increases a counter. You can use this code that doesn't need a loo...

10 giorni ago | 0

| accepted

Answered

How to enter a function into matlab

H/2*sigma.*cosh(k.*(h+z))./sinh(k.*h).*cos(k.*x-sigma.*t) H/2*sigma.^2.*cosh(k.*(h+z))./sinh(k.*h).*sin(k.*x-sigma.*t)

How to enter a function into matlab

H/2*sigma.*cosh(k.*(h+z))./sinh(k.*h).*cos(k.*x-sigma.*t) H/2*sigma.^2.*cosh(k.*(h+z))./sinh(k.*h).*sin(k.*x-sigma.*t)

11 giorni ago | 0

| accepted

Answered

Index in position 1 exceeds array bounds (must not exceed 2 )

try this for i = j:size(A,1)

Index in position 1 exceeds array bounds (must not exceed 2 )

try this for i = j:size(A,1)

11 giorni ago | 0

Answered

Shadow on xy plane of line in plot3?

use surfc function but you need a grid in x and y directions

Shadow on xy plane of line in plot3?

use surfc function but you need a grid in x and y directions

11 giorni ago | 0

Answered

Least squares regression to find coefficients

one solution is: [length(x) sum(x); sum(x) sum(x.^2)]\[sum(y) ; sum(x.*y)]

Least squares regression to find coefficients

one solution is: [length(x) sum(x); sum(x) sum(x.^2)]\[sum(y) ; sum(x.*y)]

11 giorni ago | 0

Answered

How to plot this eqaution

t=0:.001:1.0; s4 = cos(80*pi*t-10*pi).*(t>0.5 && t<=1.0);

How to plot this eqaution

t=0:.001:1.0; s4 = cos(80*pi*t-10*pi).*(t>0.5 && t<=1.0);

12 giorni ago | 1

| accepted