Diogo Carvalho

Last seen: meer dan 3 jaar ago | Active since 2019

Followers: 0 Following: 0

Statistics

All

RANK
6.633
of 160.817

CONTRIBUTIONS
0 Problems
90 Solutions

SCORE
988

NUMBER OF BADGES
3

View badges

Feeds

Solved

Double Factorial
Return double factorial n(n-2)...(5)(3)(1), n>0, odd n!! = n(n-2)...(6)(4)(2), n>0, even 1 ...

meer dan 3 jaar ago

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...

meer dan 3 jaar ago

Solved

letter yes yes & letter no no
Split a string into two strings, wherein the first string has all alphabetic letters and the second string has all the remaining...

meer dan 3 jaar ago

Solved

Sum of series VI
What is the sum of the following sequence: Σk⋅k! for k=1...n for different n?

meer dan 3 jaar ago

Solved

Sum of series V
What is the sum of the following sequence: Σk(k+1) for k=1...n for different n?

meer dan 3 jaar ago

Solved

Sum of series IV
What is the sum of the following sequence: Σ(-1)^(k+1) (2k-1)^2 for k=1...n for different n?

meer dan 3 jaar ago

Solved

Sum of series III
What is the sum of the following sequence: Σ(2k-1)^3 for k=1...n for different n?

meer dan 3 jaar ago

Solved

Sum of series II
What is the sum of the following sequence: Σ(2k-1)^2 for k=1...n for different n?

meer dan 3 jaar ago

Solved

Stress-Strain Properties - 3
A brittle material will not exhibit a yield point. In other words, the yield point and failure point coincide. In such cases, th...

meer dan 3 jaar ago

Solved

Stress-Strain Properties - 1
This is the first in a series of problems regarding mechanics of materials, in particular, material properties drawn from stress...

meer dan 3 jaar ago

Solved

Vector creation
Create a vector using square brackets going from 1 to the given value x in steps on 1. Hint: use increment.

ongeveer 4 jaar ago

Solved

Doubling elements in a vector
Given the vector A, return B in which all numbers in A are doubling. So for: A = [ 1 5 8 ] then B = [ 1 1 5 ...

ongeveer 4 jaar ago

Solved

Create a vector
Create a vector from 0 to n by intervals of 2.

ongeveer 4 jaar ago

Solved

Inner product of two vectors
Find the inner product of two vectors.

ongeveer 4 jaar ago

Solved

Flip the vector from right to left
Flip the vector from right to left. Examples x=[1:5], then y=[5 4 3 2 1] x=[1 4 6], then y=[6 4 1]; Request not ...

ongeveer 4 jaar ago

Solved

Whether the input is vector?
Given the input x, return 1 if x is vector or else 0.

ongeveer 4 jaar ago

Solved

Find max
Find the maximum value of a given vector or matrix.

ongeveer 4 jaar ago

Solved

Get the length of a given vector
Given a vector x, the output y should equal the length of x.

ongeveer 4 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...

bijna 5 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...

bijna 5 jaar ago

Solved

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...

bijna 5 jaar ago

Solved

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...

bijna 5 jaar 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...

bijna 5 jaar ago

Solved

Crunch that matrix!
You are given an M x N matrix. Write a script that will compress this matrix into an M x (N/3) matrix, where each of the terms ...

bijna 5 jaar ago

Solved

Is this triangle right-angled?
Given three positive numbers a, b, c, where c is the largest number, return *true* if the triangle with sides a, b and c is righ...

bijna 5 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 5 jaar ago

Solved

Replace Nonzero Numbers with 1
Given the matrix x, return the matrix y with non zero elements replaced with 1. Example: Input x = [ 1 2 0 0 0 ...

ongeveer 5 jaar ago

Solved

subtract central cross
Given an n-by-n square matrix, where n is an odd number, return the matrix without the central row and the central column.

ongeveer 5 jaar ago

Solved

Write a function man that takes a row vector v and returns a matrix H as follows..
Write a function called man that takes a row vector v as an input and returns a matrix H whose first column consist of the eleme...

ongeveer 5 jaar ago

Solved

frame of the matrix
Given the matrix M, return M without the external frame.

ongeveer 5 jaar ago