Community Profile

photo

Junho Kweon


Last seen: 30일 전 2018년부터 활동

Doctoral student in Electrical Engineering at Penn State

Spoken Languages:
English

통계

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

배지 보기

Content Feed

보기 기준

답변 있음
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...

대략 1년 전 | 0

질문


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...

1년 초과 전 | 답변 수: 4 | 0

4

답변

문제를 풀었습니다


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...

1년 초과 전

문제를 풀었습니다


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 ...

1년 초과 전

문제를 풀었습니다


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

1년 초과 전

문제를 풀었습니다


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 ...

1년 초과 전

문제를 풀었습니다


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 ...

1년 초과 전

문제를 풀었습니다


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

1년 초과 전

문제를 풀었습니다


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...

1년 초과 전

문제를 풀었습니다


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...

1년 초과 전

문제를 풀었습니다


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...

1년 초과 전

문제를 풀었습니다


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...

1년 초과 전

문제를 풀었습니다


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...

1년 초과 전

문제를 풀었습니다


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

1년 초과 전

문제를 풀었습니다


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.

1년 초과 전

문제를 풀었습니다


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

1년 초과 전

문제를 풀었습니다


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 ...

1년 초과 전

문제를 풀었습니다


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

1년 초과 전

문제를 풀었습니다


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 ...

1년 초과 전

문제를 풀었습니다


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

1년 초과 전

문제를 풀었습니다


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

1년 초과 전

문제를 풀었습니다


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

1년 초과 전

문제를 풀었습니다


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

1년 초과 전

문제를 풀었습니다


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...

1년 초과 전

문제를 풀었습니다


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

1년 초과 전

문제를 풀었습니다


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

1년 초과 전

문제를 풀었습니다


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 ...

1년 초과 전

문제를 풀었습니다


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

거의 2년 전

질문


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...

거의 2년 전 | 답변 수: 1 | 0

1

답변

질문


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) ...

5년 초과 전 | 답변 수: 1 | 0

1

답변