Andrew Newell

Last seen: 3 dagen ago

1.747 total contributions since 2011

A geophysicist who uses MATLAB for most of his modeling.
Professional Interests: geophysics

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Solved

Combinations without using nchoosek
You have to generate a matrix with all possible combinations of n elements *taken 2* at a time, *without using nchoosek(1:n,2)* ...

3 dagen ago

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Find the Pattern 3

3 dagen ago

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Find the Pattern 2

3 dagen ago

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Find the Pattern 1

3 dagen ago

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Rotate Matrix @180 degree
Rotate Matrix @180 degree Example A=[8 1 6; 3 5 7; 4 9 2], then answer would be [2 9 4;...

3 dagen ago

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Converts numbers into characters
Converts numbers into characters

3 dagen ago

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Find the max element of the array
Find the max element of the array

3 dagen ago

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Calculate the average value of the elements in the array
Calculate the average value of the elements in the array

3 dagen ago

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to the 2 all elements
to the 2 all elements

3 dagen ago

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the average value of the elements
Calculate the average value of the elements in the array

3 dagen ago

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Double all elements in the array
Duplicate all elements in the array

3 dagen ago

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calculate the length of matrix
input 1 array, calculate the length

3 dagen ago

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Draw a '0' in a one matrix!

3 dagen ago

Answered
Finding tangent plane with the max range value and z value being equal
Notice that is empty, then try this: X = -1.41:0.01:1.41; [~,idx] = min(abs(X-1)); disp(X(idx)-1) This being floating point...

3 dagen ago | 0

| accepted

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Approximation of Pi (vector inputs)
Pi (divided by 4) can be approximated by the following infinite series: pi/4 = 1 - 1/3 + 1/5 - 1/7 + ... For a given numbe...

5 maanden ago

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Generate Square Wave
Generate a square wave of desired length, number of complete cycles and duty cycle. Here, duty cycle is defined as the fraction ...

5 maanden ago

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Find similar sequences
Another problem inspired by a question on the <http://www.mathworks.com/matlabcentral/answers answers> forum. Given a matrix ...

5 maanden ago

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arithmetic progression
I've written a program to generate the first few terms of <https://en.wikipedia.org/wiki/Arithmetic_progression arithmetic progr...

5 maanden ago

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Sum of series VII
What is the sum of the following sequence: Σ(km^k)/(k+m)! for k=1...n for different n and m?

5 maanden ago

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Sum of series VI
What is the sum of the following sequence: Σk⋅k! for k=1...n for different n?

5 maanden ago

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Sum of series V
What is the sum of the following sequence: Σk(k+1) for k=1...n for different n?

5 maanden ago

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Sum of series IV
What is the sum of the following sequence: Σ(-1)^(k+1) (2k-1)^2 for k=1...n for different n?

5 maanden ago

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Sum of series III
What is the sum of the following sequence: Σ(2k-1)^3 for k=1...n for different n?

5 maanden ago

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Sum of series II
What is the sum of the following sequence: Σ(2k-1)^2 for k=1...n for different n?

5 maanden ago

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Sum of series I
What is the sum of the following sequence: Σ(2k-1) for k=1...n for different n?

5 maanden ago

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Sum the Infinite Series
Given that 0 < x and x < 2*pi where x is in radians, write a function [c,s] = infinite_series(x); that returns with the...

5 maanden ago

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Golomb's self-describing sequence (based on Euler 341)
The Golomb's self-describing sequence {G(n)} is the only nondecreasing sequence of natural numbers such that n appears exactly G...

5 maanden ago

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Integer sequence - 2 : Kolakoski sequence
Get the n-th term of <https://oeis.org/A000002 Kolakoski Sequence>.

5 maanden ago

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Find the stride of the longest skip sequence
We define a _skip sequence_ as a regularly-spaced list of integers such as might be generated by MATLAB's <http://www.mathworks....

5 maanden ago

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all possible subsets of set
Given a vector, return all possible subsets of the vector in a cell array. Properties of basic set theory is assumed to be valid...

5 maanden ago