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Omit columns averages from a matrix

Omit columns averages from a matrix. For example: A = 16 2 3 13 5 11 10 8 9 7 ...

4 years ago

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What's size of TV?

Many people buy TV. Usually they ask about diagonal. But also important are width and height. Let's assume that all TV have rati...

4 years ago

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cross in array

Make a cross from "1" in odd size array. Other value from array should be equal to "0"; As input you get length of side of arra...

4 years ago

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BASICS - sum part of vector

Please make a function, where as input you get vector "x" and and vector "c", where in "c" vector you get indexes to sum. Examp...

4 years ago

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Mean of many changing "for loop" 3D matrices

If you have your matrices all stored in one (four dimensional) matrix, for example |M(:,:,:,k)| would return the kth 3D matrix, ...

Mean of many changing "for loop" 3D matrices

If you have your matrices all stored in one (four dimensional) matrix, for example |M(:,:,:,k)| would return the kth 3D matrix, ...

4 years ago | 0

Answered

Extracting the coefficient of a polynomials matrix

You could differentiate and evaluate |P| at |x=0|, so P0 = subs(P, x, 0); P1 = subs(diff(P), x, 0); P2 = subs(diff(P,...

Extracting the coefficient of a polynomials matrix

You could differentiate and evaluate |P| at |x=0|, so P0 = subs(P, x, 0); P1 = subs(diff(P), x, 0); P2 = subs(diff(P,...

4 years ago | 1

| accepted

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Determine Whether an array is empty

Input a matrix x, output y is TRUE if x is empty, otherwise FALSE.

4 years ago

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Scrabble Scores

Given a word, determine its score in <http://en.wikipedia.org/wiki/Scrabble Scrabble>. The input string will always be provi...

4 years ago

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Increment a number, given its digits

Take as input an array of digits (e.g. x = [1 2 3]) and output an array of digits that is that number "incremented" properly, (i...

4 years ago

Problem

Arc length of points interpolation

Given a n by m matrix representing m vectors in n dimensions. Calculate the <https://en.wikipedia.org/wiki/Arc_length arc length...

4 years ago | 0

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Number of Horns on a unicorn!

Calculate the number of horns on a *unicorn*! And I'm talking about a unicorn with not more than one horn on it!

4 years ago

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Flag largest magnitude swings as they occur

You have a phenomenon that produces strictly positive or negative results. delta = [1 -3 4 2 -1 6 -2 -7]; Marching thr...

4 years ago

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Compute a dot product of two vectors x and y

x and y are input vectors, d is a number and contains their dot product

4 years ago

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Fahrenheit to Celsius using multiple statements

°C = (°F - 32) x 5/9 * Write a statement that assigns fractionalMultiplier with 5/9. * Write a second statement that assign...

4 years ago

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Duplicates

Write a function that accepts a cell array of strings and returns another cell array of strings *with only the duplicates* retai...

4 years ago

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Add two numbers

Calculate the sum of two numbers. Example input = [2 3] output = 5

4 years ago

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Getting the indices from a vector

This is a basic MATLAB operation. It is for instructional purposes. --- You may already know how to <http://www.mathworks....

4 years ago

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The Goldbach Conjecture, Part 2

The <http://en.wikipedia.org/wiki/Goldbach's_conjecture Goldbach conjecture> asserts that every even integer greater than 2 can ...

4 years ago

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All capital?

Are all the letters in the input string capital letters? Examples: 'MNOP' -> 1 'MN0P' -> 0

4 years ago

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Basic commands - Least common multiple

Make a function which will return least common multiple of "a" and "b" Example: a=8; b=6; y=24;

4 years ago

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Basic commands - amount of inputs

Make a function, which will return amount of given inputs Example: amountinput(1,2,4,3,10) -> 5 , because we gave functio...

4 years ago

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Sudoku square

We have a small Sudoku square, but one number is missing. x = [ 1 5 4 8 6 3 0 9 7 ] Make a function, wher...

4 years ago

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Given an unsigned integer x, find the largest y by rearranging the bits in x

Given an unsigned integer x, find the largest y by rearranging the bits in x. Example: Input x = 10 Output y is 12 ...

4 years ago

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Write an expression

Assigns finalResult with firstSample plus secondSample, squared, then divided by 3. Ex: If firstSample is 18 and secondSample is...

4 years ago

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Plus x: A first program

_Solve this problem in Mathwork's online Cody system._ Write a statement that assigns y with 5 plus x. Ex: If input x = 2,...

4 years ago

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Compute total cost

A soda costs 2 dollars. A taco costs 3 dollars. Write a statement that assigns totalCost with the total meal cost given the numb...

4 years ago

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First N Perfect Squares

*Description* Return the first N perfect squares *Example* input = 4; output = [ 1 4 9 16 ];

4 years ago

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Given a window, how many subsets of a vector sum positive

Given a vector: [1 0 -1 3 2 -3 1] and a window of 2, A sliding window would find: 1 + 0 = 1 0 - 1 = -1 ...

4 years ago

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Back to basics 11 - Max Integer

Covering some basic topics I haven't seen elsewhere on Cody. Return the largest positive integer MATLAB can handle.

4 years ago