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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...

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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...

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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...

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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...

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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...

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Matrix of almost all zeros, except for main diagonal
Write a program to input an integer n and build a n-by-n matrix with the numbers 1,2,...,n on the main diagonal and zeros elsewh...

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Matrix of almost all zeros, except for main diagonal
Write a program to input an integer n and build a n-by-n matrix with the numbers 1,2,...,n on the main diagonal and zeros elsewh...

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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...

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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. Example...

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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 ...

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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...

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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 ...

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

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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...

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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.

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

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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 ...

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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...

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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:...

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Compute Fibonacci Number
Compute the _n_-th Fibonacci Number f(0) = 0, f(1) = 1, f(2) = 1, f(3) = 2, ... f(42) = 267914296

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Create a two dimensional zero matrix
You have to create a zero matrix of size (mxn) whose inputs are m and n and the elements of your matrix should be zeros. Exam...

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Saving (in a matrix) the elapsed time and number of iterations for a large number of cases
I have a program that outputs the **number of iterations** and a **test value**, given inputs **A1,A2,A3,A4**. I want to run ...

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MATLAB: 2-D plot with z-axis given in color
My friends and I have been struggling to generate a 2-D plot in MATLAB with eta_1 and eta_2 both varying in 0:0.01:1 and the z...

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Solving a nonlinear system of equations, with constraint of nonnegative solutions
I would like to solve a nonlinear system of 9 equations, with the constraint that the solutions must be nonnegative. This pr...

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Seemingly unrelated error message: In an assignment A(I) = B, the number of elements in B and I must be the same.
Hello, I am trying to solve a ODE BVP using bvp4c. I cannot figure out why I am getting this error: In an assignmen...

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How to draw line connecting minima of graphs in the same plot space?
I would like to draw a line connecting the minima of 50 graphs in the same plot space. I am not sure what to put under %%P...

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Minimizing a multivariable function in several variables in MATLAB
I need to minimize a nonlinear function subject to constraints, where everything is a parameter - no numbers. Does anyone kno...

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MATLAB error: Subscript indices must either be real positive integers or logicals
I have the following error in MATLAB, and it's driving me nuts! I have failed to fix it for 24 hours now, and I need your help. ...

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New to MATLAB - trying to write bisection method?
Hello, I'm brand new to MATLAB and am trying to understand functions and scripts, and write the bisection method based on an alg...

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Can MATLAB divide two row vectors?
Hi. I have a simple question. I inputted [3 3 3]/[4 5 6] in MATLAB and got 0.5844 (format short). My question is how can MATL...

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