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Equal to their cube
Tell me three real numbers that are equal to their cubes?

6 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...

6 years 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:...

6 years ago

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Sorting
Assume that x is an n-by-2 matrix. The aim is to return the first column of x, but sorted according to the second column. Exa...

6 years ago

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Find the index of the largest value in any vector X=[4,3,4,5,9,12,0,4.....5]
The given function returns the index of the maximum value in a given matrix. such as X=[4,3,4,5,9,12,0,5] Ans= 6 if maxim...

6 years ago

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Vectorize the digits of an Integer
Create a vector of length N for an integer of N digits. x = 123045; x_vec = [1 2 3 0 4 5]; I happened upon a trick ...

6 years ago

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Distance walked 3D
suppose you go from x-y-z coordinates [3,4,2] to [0,0,2] to [0,1,2] to [1,1,2], to [1,1,20] then you walked 25 units of distance...

6 years ago

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Circumscribed circles
Given the lengths of the 3 sides of a triangle, output the radius of the circumscribed circle. Example: [3 4 5] -> 2.5

6 years ago

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Evaluating a polynomial
Given the following polynomial and the value for x, determine y. y = 3x^5 – x^3 + 8x – 3 Example x = 1 y = 3 - 1 +...

6 years ago

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Determine the mean of matrix
Determine the mean of matrix without using mean function Hint: use simple algorithm

6 years ago

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Check to see if a Sudoku Puzzle is Solved
*Description:* Your task, should you choose to accept it, is to make a function that checks to see if a 9x9 matrix of integer...

6 years ago

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Magic!
Check whether the input matrix is a normal magic square: <http://en.wikipedia.org/wiki/Magic_square> Output the logical va...

6 years ago

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Matlab Basics - Rounding I
Write a script to round x DOWN to the next lowest integer: e.g. x = 2.3 --> x = 2 also: x = 2.7 --> x = 2

6 years ago

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Deleting an element in a matrix
For vector Grades=[98 56 78 34 100 88 87], delete the number 78 to get the following matrix Grades=[98 56 34 100 88 87] **re...

6 years ago

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Count up then down
Create a function that produces counting up from 0 up to n then down to 0 n=2 --> 0 1 2 1 0 n=3 --> ...

6 years ago

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Is A the inverse of B?
Given a matrix A and a matrix B, is A the inverse of B? >>A=[2,4;3,5]; >>B=[-2.5,2;1.5,-1]; >>isInverse...

6 years ago

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Create a Matrix of Zeros
Given an input x, create a square matrix y of zeros with x rows and x columns.

6 years ago

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Temperature conversion
Convert temperature in degrees Celsius (C) to temperature in degrees Kelvin (K). Assume your answer is rounded to the nearest Ke...

6 years ago

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Matlab Basics - y as a function of x
Write a function to calculate y as a function of x, such that y = 6x^2 + 5x - 2

6 years ago

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What percentage?
Calculate the output c as the percentage of a on b for given a and b.

6 years ago

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Swap two numbers
Example Input: a = 10 b = 20 Output a = 20 b = 10

6 years ago

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Area of a circle
Find the value for area of the circle if diameter is given

6 years ago

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Back to basics 25 - Valid variable names
Covering some basic topics I haven't seen elsewhere on Cody. Given a string, return true if it is a valid MATLAB variable nam...

6 years ago

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Counting down
Create a vector that counts from 450 to 200 in increments of 10.

6 years ago

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Output any real number that is neither positive nor negative
Output any real number that is neither positive nor negative

6 years ago

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Volume of a box
Given a box with a length a, width b, and height c. Solve the volume of the box.

6 years ago

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Basics: 'Find the eigenvalues of given matrix
Find the eigenvalues y for a given matrix x.

6 years ago

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What number has this problem?
This problem is added because it is problem number *???* in the "Community" problems section. <http://www.mathworks.de/matlab...

6 years ago

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Fahrenheit to Celsius converter
Convert Fahrenheit to Celsius degrees.

6 years ago

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find the maximum element of the matrix
for e.g x = [1 2; 3 4] y = 4

6 years ago