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Bo Johnson


Active since 2017

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Question


Clicking Add-ons doesn't do anything
I just installed Matlab 2018a on Ubuntu Mate 18.04. Everything is running great only I can't seem to add toolboxes. When I click...

meer dan 6 jaar ago | 1 answer | 2

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Question


Installer not appearing on Ubuntu 17.10
I downloaded R2017b for Linux and unzipped the files. However, when I ran the command sudo ./install from the terminal, I didn't...

ongeveer 7 jaar ago | 1 answer | 0

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Solved


Remove any row in which a NaN appears
Given the matrix A, return B in which all the rows that have one or more <http://www.mathworks.com/help/techdoc/ref/nan.html NaN...

ongeveer 7 jaar ago

Solved


Finding Perfect Squares
Given a vector of numbers, return true if one of the numbers is a square of one of the other numbers. Otherwise return false. E...

ongeveer 7 jaar ago

Solved


Sum all integers from 1 to 2^n
Given the number x, y must be the summation of all integers from 1 to 2^x. For instance if x=2 then y must be 1+2+3+4=10.

ongeveer 7 jaar ago

Solved


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...

ongeveer 7 jaar ago

Solved


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...

ongeveer 7 jaar 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...

ongeveer 7 jaar ago

Solved


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...

ongeveer 7 jaar ago

Solved


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...

ongeveer 7 jaar ago

Solved


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 ...

ongeveer 7 jaar 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...

ongeveer 7 jaar 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 ...

ongeveer 7 jaar 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...

ongeveer 7 jaar ago

Solved


The Hitchhiker's Guide to MATLAB
Output logical "true" if the input is the answer to life, the universe and everything. Otherwise, output logical "false".

ongeveer 7 jaar ago

Solved


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

ongeveer 7 jaar ago

Solved


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

ongeveer 7 jaar ago

Solved


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

ongeveer 7 jaar ago

Solved


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

ongeveer 7 jaar 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 ...

ongeveer 7 jaar 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...

ongeveer 7 jaar 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:...

ongeveer 7 jaar ago