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Create times-tables
At one time or another, we all had to memorize boring times tables. 5 times 5 is 25. 5 times 6 is 30. 12 times 12 is way more th...

2 months ago

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Fibonacci sequence
Calculate the nth Fibonacci number. Given n, return f where f = fib(n) and f(1) = 1, f(2) = 1, f(3) = 2, ... Examples: Inpu...

2 months ago

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Determine whether a vector is monotonically increasing
Return true if the elements of the input vector increase monotonically (i.e. each element is larger than the previous). Return f...

2 months 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...

2 months ago

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Make a checkerboard matrix
Given an integer n, make an n-by-n matrix made up of alternating ones and zeros as shown below. The a(1,1) should be 1. Examp...

2 months ago

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Find all elements less than 0 or greater than 10 and replace them with NaN
Given an input vector x, find all elements of x less than 0 or greater than 10 and replace them with NaN. Example: Input ...

2 months ago

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Triangle Numbers
Triangle numbers are the sums of successive integers. So 6 is a triangle number because 6 = 1 + 2 + 3 which can be displa...

2 months ago

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Is my wife right?
Regardless of input, output the string 'yes'.

2 months 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]; ...

2 months ago

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

2 months 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...

2 months ago

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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.

2 months ago

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

2 months ago

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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 ...

2 months 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...

2 months ago

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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:...

2 months ago

Answered
Is there a catalog of pre-made problems available within MATLAB Grader?
In addition to the example problems (in a collection called Getting Starting with MATLAB Grader), the Introduction to Programmin...

3 months ago | 0

Answered
Cleaning of large files of data
Consider looking through this example in MATLAB. It might give you some ideas of how to handle the missing data.

3 months ago | 1

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Grader: Your code could not run to completion. Check for errors in the code such as infinite recursion.
There is not currently a way to extend the time limit. All computation, including running the reference solution, student soluti...

4 months ago | 1

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Graphical User Interface (GUI) in Matlab 2019a version.
In the command window, type appdesigner

4 months ago | 0

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How can I exclude index values that are not present in all columns of a matrix?
Where your data is sorted in ascending order and, at least after a cursory examination of the data, no values are duplicated in ...

4 months ago | 0

Answered
Problem with contourf for scattered data
I didn't look into what is causing it, but inspecting Z has me thinking it might be roundoff error. Your Z values in this region...

4 months ago | 0

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Too long for installation
You can try the installation self help. If you still can't find a solution, create a technical support service request here.

4 months ago | 0

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help with matlab error
It looks like your teacher is using MATLAB Grader for this problem. Because of variable scope in a function, MATLAB Grader is ca...

4 months ago | 0

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What Matlab products should I buy as a student?
I think the link you want to look at is this: https://www.mathworks.com/store If you need help selecting the products you need...

4 months ago | 1

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Is there a way of creating a code so every time you save a figure as .mat it automatically also saves it as .bmp?
There is code you can add to your script/function so that once a figure has been created, it will save it. This is done with t...

5 months ago | 0

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too many input argument while plotting date and time
Not sure exactly what your desired outcome is. However, why not use readtable, which loads your data into a table? It can handle...

5 months ago | 0

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cut function and plot
plot(f(10:20)) If you would like to understand more, I highly recommend going through MATLAB Onramp. Chapter 5 address how to s...

5 months ago | 0

Answered
Sorting by multiple columns in a table with natural number sorting
Here's a simple example that works for me: pairNum = randi(15,1,200)'; trialNum = randi(15,1,200)'; data=table(pairNum, trial...

5 months ago | 0

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Editing a Colormap in MATLAB
My suggestion would be to create an image, set it as you want, save the colormap and color axis limits to a mat file. cmap = c...

5 months ago | 0

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