# Madeline Gardner

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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...

6 years ago

Solved

Back and Forth Rows

Given a number n, create an n-by-n matrix in which the integers from 1 to n^2 wind back and forth along the rows as shown in the...

6 years ago

Solved

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...

6 years ago

Solved

Who Has the Most Change?

You have a matrix for which each row is a person and the columns represent the number of quarters, nickels, dimes, and pennies t...

6 years ago

Solved

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 ...

6 years ago

Solved

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...

6 years ago

Solved

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...

6 years 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...

6 years 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 ...

6 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...

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

App Designer, addlistener for slider

Hello! It looks like App designer has a ValueChanging callback for a slider that gets the value continuously as the slider up...

6 years ago | 5

| accepted

How to save each iteration of a loop into the same sheet of an Excel spreadsheet using a mac and the function Mac OSX friendly function xlwrite

Hello! Assuming that xlwrite supports the same syntax as <https://www.mathworks.com/help/matlab/ref/xlswrite.html xlswrite>, ...

6 years ago | 0

| accepted

I want to change/switch between the tabs in the GUI (App Designer) when i press the button?

Hello! Add a callback to the button that contains the code app.TabGroup.SelectedTab = app.InputsTab; You may need to ...

6 years ago | 15

| accepted

Problem with table column not being double when workspace identifies it as such

Hello! So there are a few things going on here. One thing I noticed is that you turn N, the trajectory array, into a tabl...

6 years ago | 3

| accepted

How do I make empty lists in MATLAB Live Script and append to it?

Hello! Luckily, Python and MATLAB have pretty similar syntax, so your code is actually going to look pretty similar! You'll b...

6 years ago | 0

How to display coordinates as rectangle is drawn over an image?

Hello! One way that you could do this is by using <https://www.mathworks.com/help/images/ref/imrect.html imrect> instead of g...

6 years ago | 2

| accepted

How do I rotate a rectangle around its bottom left corner by some angle 'theta_end'?

Hello! Unfortunately that rotate command is for rectangles created with the Antenna Toolbox, so it won't work for a graphics ...

6 years ago | 2

| accepted

How to update a matrix after iteration in a for loop and then use it in next iteration

Hello! If I've understood your question correctly, then I think your main issue is that you are trying to save each iteration...

6 years ago | 3

| accepted