Martin Nors Pedersen
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Question
LSQLIN gives error even when A\b works
Hello everyone i have a set of linear equations which i would like to solve. My data consist of two matrices, Components and ...
plus de 11 ans il y a | 1 réponse | 0
1
réponseQuestion
Error with anonymous call: Undefined function "times" for function_handle
Hello everyone i have a quite long formula which i have attempted to split up into two separate functions. I would then like ...
environ 12 ans il y a | 1 réponse | 0
0
réponseA résolu
radius of a spherical planet
you just measured its surface area, that is the input.
environ 12 ans il y a
A résolu
surface of a spherical planet
you just discovered its circumference, that is the input.
environ 12 ans il y a
A résolu
Sum all integers from 1 to 2^n
Given the number x, y must be the summation of all integers from 1 to 2^x. For instance if x=2 then y must be 1+2+3+4=10.
environ 12 ans il y a
A résolu
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...
environ 12 ans il y a
A résolu
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...
environ 12 ans il y a
A résolu
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...
environ 12 ans il y a
A résolu
The Goldbach Conjecture
The <http://en.wikipedia.org/wiki/Goldbach's_conjecture Goldbach conjecture> asserts that every even integer greater than 2 can ...
environ 12 ans il y a
A résolu
Weighted average
Given two lists of numbers, determine the weighted average. Example [1 2 3] and [10 15 20] should result in 33.333...
environ 12 ans il y a
A résolu
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...
environ 12 ans il y a
A résolu
The Hitchhiker's Guide to MATLAB
Output logical "true" if the input is the answer to life, the universe and everything. Otherwise, output logical "false".
environ 12 ans il y a
A résolu
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...
environ 12 ans il y a
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Return the 3n+1 sequence for n
A Collatz sequence is the sequence where, for a given number n, the next number in the sequence is either n/2 if the number is e...
environ 12 ans il y a
A résolu
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...
environ 12 ans il y a
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Determine whether a vector is monotonically increasing
Return true if the elements of the input vector increase monotonically (i.e. each element is larger than the previous). Return f...
environ 12 ans il y a
A résolu
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. Example...
environ 12 ans il y a
A résolu
Pizza!
Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.] Non-scor...
environ 12 ans il y a
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Swap the first and last columns
Flip the outermost columns of matrix A, so that the first column becomes the last and the last column becomes the first. All oth...
environ 12 ans il y a
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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 ...
environ 12 ans il y a
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Triangle Numbers
Triangle numbers are the sums of successive integers. So 6 is a triangle number because 6 = 1 + 2 + 3 which can be displa...
environ 12 ans il y a
A résolu
Determine if input is odd
Given the input n, return true if n is odd or false if n is even.
environ 12 ans il y a
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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...
environ 12 ans il y a
Question
Cannot declare a costum fit type using a function file
Hello everyone i have some experimental data i would like to try to fit a theoretical model to. specifically, i have a data-c...
plus de 12 ans il y a | 1 réponse | 0
0
réponseQuestion
Cannot find the plot options for LinearModels.fit using a constant
I have some x,y data that may or may not show a plateau depending on experimental conditions. Where the plateau shows up on the ...
presque 13 ans il y a | 1 réponse | 0
0
réponseQuestion
Adding legend in a plot genereted by a loop
Hello everyone i have a lot of x,y data sets that i would like to plot. The data sets are stored in a cell structure so that ...
presque 13 ans il y a | 2 réponses | 4
2
réponsesA résolu
Column Removal
Remove the nth column from input matrix A and return the resulting matrix in output B. So if A = [1 2 3; 4 5 6]; and ...
presque 13 ans il y a
Question
How can i include the fitted model and goodness of fit into my regression analysis plot
Hello everyone i have some x,y data. i have used the "Curve Fitting" app in matlab to carry out a simple linear regression an...
presque 13 ans il y a | 1 réponse | 0
