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Spherical radius given four points
Determine the radius of a sphere provided four non-coplanar points on the surface of the sphere. pts = [x1 y1 z1; x...

6 years ago

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Non trivial identities - differentiation
Return x by differentiating it.

6 years ago

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Non trivial identities - summation
Return x by adding a random number to it.

6 years ago

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Non trivial identities - reshape
Return x by reshaping it.

6 years ago

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Non trivial identities - flipping
Return x by flipping it.

6 years ago

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A shooting competition
In a shooting competition, the target is a square of side L containing a circle of radius R<=L/2. A player scores one point if h...

6 years ago

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Expand a term
Given a term, as a string, expand it. e. g. f = '2(x + y)';

6 years ago

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Modulation index
The amplitude of the carrier signal is 2V and the amplitude of the modulating signal is 8V. Find its modulation index.

6 years ago

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pizza deals
Given two pizza slices of different sizes: * Slice A with angle alpha1, radius r1, and price p1 * Slice B with angle alpha2,...

6 years ago

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Numerate input arguments
For every string input, output the corresponding number. For example: [a, b] = Test('first', 'second') a=1; b=2;

6 years ago

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Return the amount of palindromes (words) in the string.
For example: Input: s = 'eye story pop dictionary noon enjoy software moon' Output: amount = 3 Test each word...

6 years ago

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Text processing - Help Johnny write a letter home from camp
Johnny overuses the word 'great'. Write a script that will help him with this and future letters. If a sentence contains more ...

6 years ago

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Use R2016b Text Manipulations to Fix These Addresses (Part 3)
We have a series of addresses like the following which we'd like to reformat. Each of the addresses lacks a space and a comma ...

6 years ago

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Use R2016b Text Manipulations to Fix These Addresses (Part 2)
We have a series of addresses like the following which we'd like to reformat. All the addresses are in the Boston area of Mass...

6 years ago

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Use R2016b Text Manipulations to Fix These Addresses (Part 1)
We have a series of addresses like the following which we'd like to reformat. Can you remove the latitude and longitude from the...

6 years ago

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Words Count: A String Array Approach
Given an input character vector consisting of words, punctuation marks, white spaces, and possibly newline characters (\n), arra...

6 years ago

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Words Count: A Cell Array Approach
Given an input character vector consisting of words, punctuation marks, white spaces, and possibly newline characters (\n), arra...

6 years ago

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Joules to Megatons of TnT
Given joules, J, make a function that converts to megatons of TNT.

6 years ago

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write a function to calculate the snr after quantizing the signal in dB
osig : original signal qsig : quantized signal qerror : quantization error HINT: snr = 10×log10(sum(osig × osig)/sum...

6 years ago

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Calculate SNR in dB using original signal and quantized signal
origs: the original signal quants: the quantized signal *hint* : need to calculate the quantization error and plug into SN...

6 years ago

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Binary code for an analog signal
Digitization of a signal consists of 3 stages: sampling, quantization and encoding. Sampling convert the analogue signal into...

6 years ago

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Method of Common Differences part-2
This is the inverse problem to <http://www.mathworks.com/matlabcentral/cody/problems/1485 Problem 1485>. Problem 1485 illustra...

6 years ago

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Method of Common Differences part-1
Use the method of common differences to output a vector containing the initial values and the nth order difference. ex ...

6 years ago

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convert 2D array of ones and zeros to checkerboard array of [1,2] where the original array was ones and zero elsewhere
Given a 2D array of ones and zeros, generate an equivalent sized checkerboard array of ones and twos. The checkerboard pattern s...

6 years ago

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Repeat the entries of the vector to their reference times in the vector.
e.g for input x: [ 7 3 9 5] output y: [ 7 3 3 9 9 9 5 5 5 5]

6 years ago

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Pad zero between every adjacent values of the vector.
you are given a vector x. you have to make an output vector y with zeros padded between every adjacent values of x. e.g x: ...

6 years ago

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Get chain of consecutive characters
Write a function that will output a chain of consecutive characters, given 2 letters as input. It has to work backwards too. Exa...

6 years ago

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Equal temperament - musical notes and frequency
Starting from 440Hz note (musical note A above middle C), create 13 notes, using twelve-tone equal temperament, in Herz units. ...

6 years ago

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Smallest n, for n! to have m trailing zero digits
For given positive integer n, its factorial often has many trailing zeros, in other words many factors of 10s. In order for n! t...

6 years ago

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Is it a mail?
Electronic mail, or email, is a method of exchanging digital messages between people using digital devices such as computers, mo...

6 years ago