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Rik


Last seen: Today Active since 2017

E-mails with feedback/questions about FEX submissions are welcomed. In general I will post e-mails about Answers on the related page, unless there is good cause not to do so.

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Solved


Determina si el número es primo
Primero, antes que nada: ¿Qué es un número primo? Un número primo es cualquier número que solamente se puede dividir por 1 y ...

8 hours ago

Solved


Maximum of ND-array
Find the maximum element of a N dimensional array. Example: A=[1 2 4 ; -20 4 10]; The maximum is 10.

8 hours ago

Solved


Sum of Arithmetic Progression
Given the starting number, difference and the number of terms - find the sum of the arithmetic progression.

18 hours ago

Solved


There are 10 types of people in the world
Those who know binary, and those who don't. The number 2015 is a palindrome in binary (11111011111 to be exact) Given a year...

1 day ago

Solved


Numerical Integration
Input * |x0|, a real number greater than 0 Output * |I|, a numerical estimate of the integral x0 / I...

1 day ago

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Differential equations I
Given a function handle |f| an initial condition |y0| and a final time |tf|, solve numerically the differential equation dy...

1 day ago

Solved


Make a Plot with Functions
Make a plot and test

1 day ago

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Monte-Carlo integration
Write a function that estimates a d-dimensional integral to at least 1% relative precision. Inputs: * d: positive integer....

1 day ago

Solved


The Birthday Phenomenon
First off, leap years are not being considered for this. In fact the year that people are born shouldn't be taken into considera...

1 day ago

Solved


Throwing Dice - Will You Be Eaten By The Dragon?
You and a dragon have agreed to let dice rolls determine whether it eats you or not. The dragon will roll a single die, of x ...

1 day ago

Solved


Chess probability
The difference in the ratings between two players serves as a predictor of the outcome of a match (the <http://en.wikipedia.org/...

1 day ago

Solved


Calculate Amount of Cake Frosting
Given two input variables r and h, which stand for the radius and height of a cake, calculate the surface area of the cake you n...

1 day ago

Solved


Solve a System of Linear Equations
Example: If a system of linear equations in x₁ and x₂ is: 2x₁ + x₂ = 2 x₁ - 4 x₂ = 3 Then the coefficient matrix (A) is: 2 ...

1 day ago

Solved


Find the maximum number of decimal places in a set of numbers
Given a vector or matrix of values, calculate the maximum number of decimal places within the input. Trailing zeros do not coun...

1 day ago

Solved


Make roundn function
Make roundn function using round. x=0.55555 y=function(x,1) y=1 y=function(x,2) y=0.6 y=function(x,3) ...

1 day ago

Solved


Rounding off numbers to n decimals
Inspired by a mistake in one of the problems I created, I created this problem where you have to round off a floating point numb...

1 day ago

Solved


Matlab Basics - Rounding III
Write a script to round a large number to the nearest 10,000 e.g. x = 12,358,466,243 --> y = 12,358,470,000

3 days ago

Solved


Matlab Basics - Rounding II
Write a script to round a variable x to 3 decimal places: e.g. x = 2.3456 --> y = 2.346

3 days ago

Solved


Check that number is whole number
Check that number is whole number Say x=15, then answer is 1. x=15.2 , then answer is 0. http://en.wikipedia.org/wiki/Whole_numb...

3 days ago

Solved


MATLAB Basic: rounding IV
Do rounding towards plus infinity. Example: -8.8, answer -8 +8.1 answer 9 +8.50 answer 9

3 days ago

Solved


MATLAB Basic: rounding III
Do rounding towards minus infinity. Example: -8.8, answer -9 +8.1 answer 8 +8.50 answer 8

3 days ago

Solved


MATLAB Basic: rounding II
Do rounding nearest integer. Example: -8.8, answer -9 +8.1 answer 8 +8.50 answer 9

3 days ago

Solved


MATLAB Basic: rounding
Do rounding near to zero Example: -8.8, answer -8 +8.1 answer 8

3 days ago

Answered
Find the nearest two values in all grid cells to a specified value across a 3D matrix
Why squeeze the indices? Just use them to index (for which you need sub2ind). As for the second closest: the easiest way is to ...

7 days ago | 0

| accepted

Answered
Calling the error function does not print the line number in r2022b
I personally use my own customized versions of error and warning. They take an options struct as the first argument to determine...

7 days ago | 0

Answered
Pseudorandom character matrix generation
If you want a 10x10 char array, you can also use indexing: source = 'bdpq'; Array = source(randi(end,[10 10]))

7 days ago | 0

| accepted

Answered
If not with a xlsx file
You should have used isempty in your current code: if ~isempty(app.filename) For the test you now want to do, you should extra...

8 days ago | 0

| accepted

Answered
Saving file causes glitch
As a temporary workaround you can use this: edit my_script.m % should give you a popup asking if you want to create the file O...

8 days ago | 0

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