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**Content Feed**

Division with negative powers

u = [0 0 1 0 1]; v = [1 4 4 4 3]; Result = filter(u,v,[1, zeros(1,7)]) ans = 0 0 1 -4 13 -40 121 -364

5 years ago | 1

| accepted

How to add 'Description' to '.jpeg'?

If you're only interested in the 'Comment' field, then you can set it directly: imwrite(i,'figC.jpg', 'Comment', 'Made with...

5 years ago | 0

| accepted

How to make array with first values of matrix

% Input A = [1 2 3 4 5 6 7 8 9 10;2 2 3 3 4 5 5 2 3 3]'; % Result B = A([boolean(1); diff(A(:,2))~=0],1);

5 years ago | 0

How do I read strings with textscan?

Have you tried specifying the delimiter? formatSpec = '%d %s %f %f %f %f %f %f %f %f %f'; C = textscan(fid,formatSpec,15...

5 years ago | 0

Help with dec2hex (case sensitive and Zero)

You could change the line: CarsHex=dec2hex(CarsDecimal); to: CarsHex=lower(arrayfun(@(x) (dec2hex(x)), CarsDecimal,...

5 years ago | 1

| accepted

not enough input argument

Your code, which I've included below takes two inputs, x and y, however you don't use the first input 'x' anywhere in your code,...

5 years ago | 0

Why this code is error???

Because given your definitions of x and y, the expression _3+(-x)+(-y)_ results in [3 1 -1 -3], and you cannot calculate the fac...

5 years ago | 0

Solved

Subset Sum

Given a vector v of integers and an integer n, return the the indices of v (as a row vector in ascending order) that sum to n. I...

5 years ago

Solved

Create a Multiplication table matrix...

Create a product table in this format: P = [ 1 2 3 4 5; 2 4 6 8 10; 3 6 9 12 15; 4 8 12 1...

5 years ago

Solved

Determine Whether an array is empty

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

5 years ago

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Who knows the last digit of pi?

There is only one man who knows the last digit of pi, who is that man? Give the name of that man, who, by popular believe, can ...

5 years ago

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Say something funny

Say something funny, or not. Your solution will be (fully automatically and objectively) scored based on how clever or funny ...

5 years ago

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Energy of a photon

*⚛ ☢ ⚛ ☢ ⚛ ☢ ⚛* Given the frequency F of a photon in giga hertz. Find energy E of this...

5 years ago

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Free passes for everyone!

_Simply return the name of the coolest numerical computation software ever_ *Extra reward* (get a _freepass_): Once a mont...

5 years ago

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Find the largest value in the 3D matrix

Given a 3D matrix A, find the largest value. Example >> A = 1:9; >> A = reshape(A,[3 1 3]); >> islargest(A) a...

5 years ago

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Indexed Probability Table

This question was inspired by a Stack Overflow question forwarded to me by Matt Simoneau. Given a vector x, make an indexed pro...

5 years ago

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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!

5 years ago

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Find a Pythagorean triple

Given four different positive numbers, a, b, c and d, provided in increasing order: a < b < c < d, find if any three of them com...

5 years ago

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Is this triangle right-angled?

Given any three positive numbers a, b, c, return true if the triangle with sides a, b and c is right-angled. Otherwise, return f...

5 years ago

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surface of a spherical planet

you just discovered its circumference, that is the input.

5 years ago

Solved

Solve the Sudoku Row

*Description* A simple yet tedious task occurs near the end of most Sudoku-solving algorithms, computerized or manual. The ta...

5 years ago

Solved

How to subtract?

*± ± ± ± ± ± ± ± ± ± ±* * Imagine you need to subtract one...

5 years ago

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Extract leading non-zero digit

<http://en.wikipedia.org/wiki/Benford%27s_law Benford's Law> states that the distribution of leading digits is not random. This...

5 years ago

Solved

Generate a vector like 1,2,2,3,3,3,4,4,4,4

Generate a vector like 1,2,2,3,3,3,4,4,4,4 So if n = 3, then return [1 2 2 3 3 3] And if n = 5, then return [1 2 2...

5 years ago

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Reverse the Words (not letters) of a String

*Description* Change the words of a string such that the words appear in reverse order. You may assume that the string is a n...

5 years ago

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Add two numbers

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

5 years ago

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Television Screen Dimensions

Given a width to height ratio of a TV screen given as _w_ and _h_ as well as the diagonal length of the television _l_, return t...

5 years ago

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Sums with Excluded Digits

Add all the integers from 1 to n in which the digit m does not appear. m will always be a single digit integer from 0 to 9. no...

5 years ago

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Dimensions of a rectangle

The longer side of a rectangle is three times the length of the shorter side. If the length of the diagonal is x, find the width...

5 years ago

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5th Time's a Charm

Write a function that will return the input value. However, your function must fail the first four times, only functioning prope...

5 years ago