I'm a Senior undergraduate in Mechanical Engineering and Applied Mathematics. I am involved in research in computational fluids. My hobbies are rock climbing and making mostly dysfunctional mechatronic projects.

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How to use a for loop to solve ODE

There are two options: use a prebuilt ode integrator like ode45, or you can explicitly compute at each step. The latter sounds m...

How to use a for loop to solve ODE

There are two options: use a prebuilt ode integrator like ode45, or you can explicitly compute at each step. The latter sounds m...

2 years ago | 0

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Why does hist, histogram and how the shape of my data is affect how my results are displayed?

Well, you described two situations and two different functions and gave three plots, so I am somewhat confused. I would say t...

Why does hist, histogram and how the shape of my data is affect how my results are displayed?

Well, you described two situations and two different functions and gave three plots, so I am somewhat confused. I would say t...

2 years ago | 0

Question

Comparing randsample and binning uniform random

I can produce randomly polled (with replacement) values from vector x with probabilities in vector p using randsample with repla...

2 years ago | 0 answers | 0

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How to replicate an array diagonally for a given number of times?

Alternatively, if you're not against "eval", you can use it to type out those repetitions *n* times. a = rand(m,n); N = ...

How to replicate an array diagonally for a given number of times?

Alternatively, if you're not against "eval", you can use it to type out those repetitions *n* times. a = rand(m,n); N = ...

2 years ago | 0

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Bottles of beer

Given an input number representing the number of bottles of beer on the wall, output how many are left if you take one down and ...

2 years ago

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Find the alphabetic word product

If the input string s is a word like 'hello', then the output word product p is a number based on the correspondence a=1, b=2, ....

2 years ago

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Swap the input arguments

Write a two-input, two-output function that swaps its two input arguments. For example: [q,r] = swap(5,10) returns q = ...

2 years ago

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Pangrams!

A pangram, or holoalphabetic sentence, is a sentence using every letter of the alphabet at least once. Example: Input s ...

2 years ago

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radius of a spherical planet

You just measured its surface area, that is the input.

2 years ago

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Function Iterator

Given a handle fh to a function which takes a scalar input and returns a scalar output and an integer n >= 1, return a handle f...

2 years ago

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Distance walked 1D

Suppose you go from position 7 to 10 to 6 to 4. Then you have walked 9 units of distance, since 7 to 10 is 3 units, 10 to 6 is 4...

2 years ago

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Remove all the consonants

Remove all the consonants in the given phrase. Example: Input s1 = 'Jack and Jill went up the hill'; Output s2 is 'a ...

2 years ago

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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".

2 years ago

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Return the largest number that is adjacent to a zero

This example comes from Steve Eddins' blog: <http://blogs.mathworks.com/steve/2009/05/27/learning-lessons-from-a-one-liner/ Lear...

2 years ago

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Reverse the vector

Reverse the vector elements. Example: Input x = [1,2,3,4,5,6,7,8,9] Output y = [9,8,7,6,5,4,3,2,1]

2 years ago

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Simple equation: Annual salary

Given an hourly wage, compute an annual salary by multiplying the wage times 40 and times 50, because salary = wage x 40 hours/w...

2 years ago

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The Goldbach Conjecture

The <http://en.wikipedia.org/wiki/Goldbach's_conjecture Goldbach conjecture> asserts that every even integer greater than 2 can ...

2 years ago

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Which values occur exactly three times?

Return a list of all values (sorted smallest to largest) that appear exactly three times in the input vector x. So if x = [1 2...

2 years ago

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Remove the vowels

Remove all the vowels in the given phrase. Example: Input s1 = 'Jack and Jill went up the hill' Output s2 is 'Jck nd Jll wn...

2 years ago

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Getting logical indexes

This is a basic MATLAB operation. It is for instructional purposes. --- Logical indexing works like this. thresh = 4...

2 years ago

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I've specified axis limits manually, why do they resize during animation?

Figured it out how to solve the problem. But I don't know why it works, so that would be nice to get explained. If I use this, ...

I've specified axis limits manually, why do they resize during animation?

Figured it out how to solve the problem. But I don't know why it works, so that would be nice to get explained. If I use this, ...

3 years ago | 0

Question

I've specified axis limits manually, why do they resize during animation?

I'm animating uploaded data from a GUI. The animation is a trail of data that adds new values as dark blue and old values trail ...

3 years ago | 2 answers | 0

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Acid and water

⚖ ⚖ ⚖ ⚖ ⚖ ⚖ ⚖ ⚖ Assume that there is a 100 liter tank. It is initially fi...

3 years ago

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Number of Even Elements in Fibonacci Sequence

Find how many even fibonacci numbers are available in the first d numbers. Consider the following first 14 numbers 1 1 2...

3 years ago

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Energy of a photon

*⚛ ☢ ⚛ ☢ ⚛ ☢ ⚛* Given the frequency F of a photon in giga hertz. Find energy E of this...

3 years ago

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Pentagonal Numbers

Your function will receive a lower and upper bound. It should return all pentagonal numbers within that inclusive range in ascen...

3 years ago

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Pernicious Anniversary Problem

Since Cody is 5 years old, it's pernicious. A <http://rosettacode.org/wiki/Pernicious_numbers Pernicious number> is an integer w...

3 years ago

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The 5th Root

Write a function to find the 5th root of a number. It sounds easy, but the typical functions are not allowed (see the test su...

3 years ago

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Replicate elements in vectors

Replicate each element of a row vector (with NaN) a constant number of times. Examples : n=2, A=[1 2 3] -> [1 1 2 2 3 3] n=0...

3 years ago

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Set the array elements whose value is 13 to 0

Input A either an array or a vector (which can be empty) Output B will be the same size as A . All elements of A equal to 13...

3 years ago