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Weighted average
Given two lists of numbers, determine the weighted average. Example [1 2 3] and [10 15 20] should result in 33.333...

8 years ago

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Add two numbers
Given a and b, return the sum a+b in c.

8 years ago

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Replace Vector Elements
Replace all elements in a vector which are equal to or smaller than zero with 0.1. Example: A = [1 2 3 -1 0 2 -3 -80]; ...

8 years ago

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Swap the first and last columns
Flip the outermost columns of matrix A, so that the first column becomes the last and the last column becomes the first. All oth...

8 years ago

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Column Removal
Remove the nth column from input matrix A and return the resulting matrix in output B. So if A = [1 2 3; 4 5 6]; and ...

8 years ago

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Select every other element of a vector
Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...

8 years ago

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Energy of a photon
*&#9883 &#9762 &#9883 &#9762 &#9883 &#9762 &#9883* Given the frequency F of a photon in giga hertz. Find energy E of this...

8 years ago

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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...

8 years ago

Question

How can MATLAB find and replace a word in a text that contains multiple lines?
E.g. if there is a text file with 57 lines and I want a small change of a word in line 54.

8 years ago | 1 answer | 0

Question

Can I manipulate an existing Excel file through MATLAB?
I have an existing Excel file that has several mathematical operations into it. I want to insert several values through MATLAB, ...

8 years ago | 0 answers | 0

Question

Turning a row matrix of numbers into a row matrix of vectors.
I want to do something like this: I have the following matrix: A = [1 5 7] I want to turn it into: Anew = [1:6 (...

8 years ago | 0 answers | 0

Question

Square matrix with relationships among equal rows.
I have a matrix with the following form: A = [ 9 9 9; 5 6 5; 9 9 9; 4 4 2; 5 6 5; 5 6 5; 4 4 4; 9 9 9] If a particular...

8 years ago | 3 answers | 0

Question

I have three columns containing data. I want to isolate particular data depending on the third column and find the maximum values on the second column for each case of the isolated data from the third column.
I have a matrix with the following form: A = [1 2 3; 2 2 6; 0 1 3; 0 4 3] I want for each unique case from the third c...

8 years ago | 1 answer | 0

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 ...

8 years ago

Question

What is a code to remove elements that are identical between each other, in the 2 columns in a nx2 matrix?
If I have a matrix like: A = [2 5; 5 6; 1 1; 2 2; 4 8; 2 6; 3 3] What is a generalized code to remove the element...

8 years ago | 0 answers | 0

Question

How do I break a complex loop with a multiple-if structure?
I am writing a code that has the following form: for i = 1:size(interiorcolumns,1) if interiorcolumns{i}(6) == height...

8 years ago | 2 answers | 0