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5 years ago

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Crop an Image
A grayscale image is represented as a matrix in MATLAB. Each matrix element represents a pixel in the image. An element value re...

5 years 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 ...

5 years ago

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Plot Damped Sinusoid
Given two vectors |t| and |y|, make a plot containing a blue ( |b| ) dashed ( |--| ) line of |y| versus |t|. Mark the minimum...

5 years ago

Solved

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| ...

5 years ago

Solved

Verify Law of Large Numbers
If a large number of fair N-sided dice are rolled, the average of the simulated rolls is likely to be close to the mean of 1,2,....

5 years 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...

5 years 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...

5 years ago

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Solve a System of Linear Equations
*Example*: If a system of linear equations in _x&#8321_ and _x&#8322_ is: 2 _x₁_ + _x₂_ = 2 _x₁...

5 years 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...

5 years ago

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Find out sum of all elements of given Matrix
Find out sum of all elements of given Matrix A=[1 2 3;4 5 6 ;7 8 9]; Answer must be: 45 *If you like this problem, pl...

5 years ago

Solved

Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

5 years ago

Question

MATLAB function cross can be applied to symbolic object but Documentation does not explain?
syms x y z vec1=[x y z]; vec2=[x y z]; cross(vec1,vec2)

5 years ago | 1 answer | 0

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Question

How to build dynamic model in SimMechanics ?
I want to know what method is used by SimMechanics to build dynamic model. Maybe Newton-Euler Method or Lagrangian Form...

6 years ago | 1 answer | 0

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Determine if input is odd
Given the input n, return true if n is odd or false if n is even.

6 years ago

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Getting logical indexes
This is a basic MATLAB operation. It is for instructional purposes. --- Logical indexing works like this. thresh = 4...

6 years 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:...

6 years ago

Answered
How do i find a maximum elements in a specific row ?
A=[1,2,3;4,5,6;7,8,9]; M=max(A(2,:))

6 years ago | 1

| accepted

Answered
rand command give different answer
All the random number functions, rand, randn, randi, and randperm, draw values from a shared random number generator. Every time...

6 years ago | 0

Answered
How we can generate generate a noise signal from gauss distribution ??
This is a example for generating a bivariate normal distribusion which is a duplicate of MATLAB Documentation. Maybe it can help...

6 years ago | 0

Answered
how to fix this error matrix dimension must agree
The p1 matrix is 1x100. nerst(:) will turn a matrix nerst which is 1x100 to 100x1. A matrix with size of 1x100 can't | with ...

6 years ago | 0

Answered
hello everyone, i am a noob using matlab. please help me i have an equation and 2 unknown variable
The equation μ=(μmax*Cs)/(Ks+Cs ) can be converted to μmax*Cs-Ks*μ=μ*Cs. μ=[0.011;0.059;0.053;0.149;0.125]; Cs=[430;428;...

6 years ago | 0

Answered
How can I iterate all three cases at once in one script?
Maybe you can use a for loop. You can store functions g1(x), g2(x), g3(x) as a cell array. Such as g1=@(x) sqrt(2*x+3); g2=@(x...

6 years ago | 2

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Hello. I have to write a function called occurrence that tests whether a character exists in a string. If it is present, display true and the position (index) of the character. If it is not present, return inf. it gives me an error in line 2. help?!?
function find_letter(L, string) n= length(L); not_found = true; for k = 1:n if isequal(L(k), strin...

6 years ago | 0

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How to integrate this function numerically?
You can use Euler formula. V(n+1)=V(n)+h*f(R,V(n)), which f(R,V) is the right side of differential equation. But you need to kn...

6 years ago | 1

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How can I use a for loop to select values from a table that meet two conditions?
m=1; for i=1:height(tab) if(Aerobic(i)~=Anaerobic(i)) && Aerobic(i)>=0 && Anaerobic(i)>=0 secmet(m, 1:3)=tab(i, ...

6 years ago | 1

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How can I do this Matrix data operation?
It is Unworkable! For eaxample, every row of new matrix need that there must exist current and angle pairs which generate same ...

6 years ago | 0

Answered
How to collect a fraction in a certain equation?
Hi Fahmy. I try the matlab function factor, but it get the result as following. syms a b c d e f=(a/3)+(b/3)+(c/3)+(d/3)+(e/3...

6 years ago | 1

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Answered
Adding a column every nth column without replacing existing one
It is every 2th column. Now I put it in Answer this question rowA=size(A,1); colA=size(A,2); B=zeros(rowA,colA*2); B(:,1:2:2...

6 years ago | 1

Answered
regexp help when comparing strings
The function regexpi needs the second argument expression must be a regular expression! About what is regular expression, you c...

6 years ago | 0