photo

Junho Kweon


Last seen: 3 Monate vor |  Aktiv seit 2018

Followers: 0   Following: 0

Doctoral student in Electrical Engineering at Penn State

Spoken Languages:
English

Statistik

All
  • First Answer
  • Promoter
  • Community Group Solver
  • MATLAB Central Treasure Hunt Finisher
  • Solver
  • First Review
  • Thankful Level 1

Abzeichen anzeigen

Feeds

Anzeigen nach

Beantwortet
chol() gives error for a (barely) positive definite matrix.
There is quite well-developed code nearestSPD, which can solve the minor round-off error as @Christine Tobler mentioned. The cod...

fast 2 Jahre vor | 0

Frage


How can I derive inverse of the matrix with infinite determinant?
Hi guys, there is a matrix A which has finite dimension and finite-valued elements. However, because of its large size and valu...

etwa 2 Jahre vor | 4 Antworten | 0

4

Antworten

Gelöst


Determine if Input is Oddish or Evenish (Odd/Even Sum of Digits)
Given a positive integer n, determine whether n is "oddish" or "evenish" - that is, whether the sum of the digits of n is odd or...

etwa 2 Jahre vor

Gelöst


Determine if x is a combination of m and n
Given positive integers x, m, and n, determine if x can be written as x = am + bn for any (non-negative) integers a and b. Your ...

etwa 2 Jahre vor

Gelöst


Create an arrow matrix
An arrow matrix is a square matrix that contains ones on the diagonal, the last column, and last row. ...

etwa 2 Jahre vor

Gelöst


Calculating Student Grades
The matrix grades contains raw grades for 7 students who took your course. Each row represents a different student. The first 7 ...

etwa 2 Jahre vor

Gelöst


Dog Statistics
The vectors ht and wt contains the heights and weights of 20 golden retrievers. In some cases, it was not possible to make both ...

etwa 2 Jahre vor

Gelöst


Generate this matrix
Generate the following matrix. n = 2; out = [-4 -3 -2 -1 0 -3 -2 -1 0 1 -...

etwa 2 Jahre vor

Gelöst


Simpson's Paradox - Calculate correlation coefficients for groups of data
Simpson's Paradox is a statistical phenomenon where groups of data can have a characteristic while the whole data set together h...

etwa 2 Jahre vor

Gelöst


Find the minimum of the column-maximums of a matrix
Given a matrix A, find the maximum value of each column, then return the smallest of those maximum values (ie return the minimum...

etwa 2 Jahre vor

Gelöst


Calculate the mean of each half of a matrix
Given a matrix with an even number of columns, n, return a 1-by-2 row vector where the first element is the mean of all the elem...

etwa 2 Jahre vor

Gelöst


Find Closest Constant
Given a number x, return the value that is closest to x from this list of constants: 0, 1, , e, , (also known as ). For exampl...

etwa 2 Jahre vor

Gelöst


Finding Perfect Squares
Given a vector of numbers, return true if one of the numbers is a square of one of the numbers. Otherwise return false. Example...

etwa 2 Jahre vor

Gelöst


Return area of square
Side of square=input=a Area=output=b

etwa 2 Jahre vor

Gelöst


Maximum value in a matrix
Find the maximum value in the given matrix. For example, if A = [1 2 3; 4 7 8; 0 9 1]; then the answer is 9.

etwa 2 Jahre vor

Gelöst


Add two numbers
Given a and b, return the sum a+b in c.

etwa 2 Jahre vor

Gelöst


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 ...

etwa 2 Jahre vor

Gelöst


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

etwa 2 Jahre vor

Gelöst


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 ...

etwa 2 Jahre vor

Gelöst


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

etwa 2 Jahre vor

Gelöst


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

etwa 2 Jahre vor

Gelöst


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

etwa 2 Jahre vor

Gelöst


Arrange Vector in descending order
If x=[0,3,4,2,1] then y=[4,3,2,1,0]

etwa 2 Jahre vor

Gelöst


Select every other element of a vector
Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...

etwa 2 Jahre vor

Gelöst


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

etwa 2 Jahre vor

Gelöst


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

etwa 2 Jahre vor

Gelöst


Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

etwa 2 Jahre vor

Gelöst


Pizza!
Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.] Non-scor...

mehr als 2 Jahre vor

Frage


How can I convert a function with multivariable input to a function with single vector input?
Hi, I want to use fmincon, and fmincon can deal with only function with single vector input. When my formula is as below, it wo...

mehr als 2 Jahre vor | 1 Antwort | 0

1

Antwort

Frage


How to take a part of matrix, which is function result?
My code is like this. A = [1 2; 3 4]; B = sum(A) % I want to use fft or other functions rather than 'sum' x = B(1) ...

etwa 6 Jahre vor | 1 Antwort | 0

1

Antwort