142 total contributions since 2020

Engineer: EEE EME

Languages: French, English

Country: Senegal

Interest: Power systems

Solved

How to find the position of an element in a vector without using the find function

Write a function posX=findPosition(x,y) where x is a vector and y is the number that you are searching for. Examples: fin...

3 hours ago

Solved

Making change

Given an amount of currency, return a vector of this form: [100 50 20 10 5 2 1 0.5 0.25 0.1 0.05 0.01] Example: Input a = ...

3 hours ago

Solved

Distance walked 1D

Suppose you go from position 7 to 10 to 6 to 4. Then you have walked 9 units of distance, since 7 to 10 is 3 units, 10 to 6 is 4...

3 hours ago

Solved

Volume of this donut

Given hole diameter a, and outermost diameter b, determine the volume y of the resulting donut.

10 hours ago

Answered

How to get quotient value after division without round off?

Hello, I tried to execute your portion of code but, just as expected, n1 has the value 78 not 79 for me. Try using the functio...

How to get quotient value after division without round off?

Hello, I tried to execute your portion of code but, just as expected, n1 has the value 78 not 79 for me. Try using the functio...

11 hours ago | 0

| accepted

Solved

Project Euler: Problem 4, Palindromic numbers

A palindromic number reads the same both ways. The largest palindrome made from the product of two 2-digit numbers is 9009 = 91 ...

1 day ago

Answered

Electromotive Force Voltage Example

Hello, From the second line of your code, you need to know first what is the physical meaning of each paramaters ('v', 'B', 'le...

Electromotive Force Voltage Example

Hello, From the second line of your code, you need to know first what is the physical meaning of each paramaters ('v', 'B', 'le...

1 day ago | 0

Solved

Project Euler: Problem 8, Find largest product in a large string of numbers

Find the greatest product of five consecutive digits in an n-digit number. 73167176531330624919225119674426574742355349194934...

1 day ago

Answered

PV array and grid for battery charging

Hello, You cannot just randomly connect your batteries' (+) to the AC side, the (-) to the DC side of the grid and expect to ha...

PV array and grid for battery charging

Hello, You cannot just randomly connect your batteries' (+) to the AC side, the (-) to the DC side of the grid and expect to ha...

2 days ago | 0

Solved

Remove all the consonants

Remove all the consonants in the given phrase. Example: Input s1 = 'Jack and Jill went up the hill'; Output s2 is 'a ...

2 days ago

Solved

Project Euler: Problem 5, Smallest multiple

2520 is the smallest number that can be divided by each of the numbers from 1 to 10 without any remainder. What is the smalle...

2 days ago

Solved

Project Euler: Problem 7, Nth prime

By listing the first six prime numbers: 2, 3, 5, 7, 11, and 13, we can see that the 6th prime is 13. What is the Nth prime nu...

3 days ago

Solved

Project Euler: Problem 10, Sum of Primes

The sum of the primes below 10 is 2 + 3 + 5 + 7 = 17. Find the sum of all the primes below the input, N. Thank you <http:/...

3 days ago

Answered

Removing a row from a matrix when one value is zero without hardcoding

Hello, Here is what i achieved. Hope it does help you. BoeingStock(BoeingStock(:,4)==0,:)=[]

Removing a row from a matrix when one value is zero without hardcoding

Hello, Here is what i achieved. Hope it does help you. BoeingStock(BoeingStock(:,4)==0,:)=[]

4 days ago | 0

Answered

How the calculate laplace x(t) = (exp^-at)*u(t) matlab?

Hello, Here is what i achieved. You'll need to re-define your constant "a" and your function u(t). Hope it helps you understan...

How the calculate laplace x(t) = (exp^-at)*u(t) matlab?

Hello, Here is what i achieved. You'll need to re-define your constant "a" and your function u(t). Hope it helps you understan...

5 days ago | 0

| accepted

Answered

Can someone explain this Code?

Hello, Here is what i achieved to help you understand your algorithm. You can run the code and track how variables evolve throu...

Can someone explain this Code?

Hello, Here is what i achieved to help you understand your algorithm. You can run the code and track how variables evolve throu...

5 days ago | 0

Solved

Bullseye Matrix

Given n (always odd), return output a that has concentric rings of the numbers 1 through (n+1)/2 around the center point. Exampl...

5 days ago

Answered

Matrix B from column of matrix A with condition

Hello, Here is what i achieved. Hope you can easily understand it. A=randi(5,5) % Just for an example, A is a 5x5 array of ran...

Matrix B from column of matrix A with condition

Hello, Here is what i achieved. Hope you can easily understand it. A=randi(5,5) % Just for an example, A is a 5x5 array of ran...

6 days ago | 1

| accepted

Solved

Summing digits

Given n, find the sum of the digits that make up 2^n. Example: Input n = 7 Output b = 11 since 2^7 = 128, and 1 + ...

6 days ago

Solved

Most nonzero elements in row

Given the matrix a, return the index r of the row with the most nonzero elements. Assume there will always be exactly one row th...

6 days ago

Solved

Back and Forth Rows

Given a number n, create an n-by-n matrix in which the integers from 1 to n^2 wind back and forth along the rows as shown in the...

6 days ago

Solved

Weighted average

Given two lists of numbers, determine the weighted average. Example [1 2 3] and [10 15 20] should result in 33.333...

6 days ago

Solved

Return the largest number that is adjacent to a zero

This example comes from Steve Eddins' blog: <http://blogs.mathworks.com/steve/2009/05/27/learning-lessons-from-a-one-liner/ Lear...

6 days 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...

7 days ago

Solved

Find the numeric mean of the prime numbers in a matrix.

There will always be at least one prime in the matrix. Example: Input in = [ 8 3 5 9 ] Output out is 4...

7 days 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...

7 days 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...

7 days 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 ...

7 days ago

Answered

Eliminate rows from an array

Hello, this is what you tried to achieve: data3(1+length(data3)/2:length(data3),:)=[]; Try to run below example. Hope it helps...

Eliminate rows from an array

Hello, this is what you tried to achieve: data3(1+length(data3)/2:length(data3),:)=[]; Try to run below example. Hope it helps...

7 days ago | 1