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Generate pi using logarithm
Generate pi using logarithm

fast 12 Jahre vor

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Are you in or are you out?
Given vertices specified by the vectors xv and yv, and a single point specified by the numbers X and Y, return "true" if the poi...

fast 12 Jahre vor

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Square wave average calculation
Given its peak and duty cycle, calculate avg value of square wave

fast 12 Jahre vor

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Calculate the nth Fibonacci number USING 'Golden Ratio' concept
f = [1 1 2 3 5 8 13 ...] If n=6, f(6)=8

fast 12 Jahre vor

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Given a number find two variables
If the input is *x*, find *a* and *b* from the following equation: *x = a*2^b*. Hint: *b* is an integer while *x* and *a* ar...

fast 12 Jahre vor

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R2012b atan in Degrees
Return in degrees the atan result of inputs for all four quadrants. *Examples:* [x, y] Degrees 1 0 0 1 1 ...

fast 12 Jahre vor

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Calculate the peak value of square wave
Given the peak value of sine wave, calculate corresponding peak value of square wave, if both have same RMS voltage.

fast 12 Jahre vor

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Make a Plot with Functions
Make a plot and test

fast 12 Jahre vor

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Calculate the integral of the polynomial
for e.g. in = [3 2 1] out = [1 1 1 0]

fast 12 Jahre vor

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Remove element(s) from cell array
You can easily remove an element (or a column in any dimension) from a normal matrix, but assigning that value (or range) empty....

fast 12 Jahre vor

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Fibonacci-Sum of Squares
Given the Fibonacci sequence defined by the following recursive relation, * F_n = F_(n-1) + F_(n-2) * where F_0 = 0 and F_1 ...

fast 12 Jahre vor

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cos for boss?
a programmer had too much coffee and his boss needs cos(alpha+beta) correctly, especially when alpha or beta or the coffee are c...

fast 12 Jahre vor

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Find the maximum two numbers of every column of a matrix
Find the maximum two numbers of every column of a matrix. Example: If we input a matrix A = [ 1 2 4 6 0 3 ...

fast 12 Jahre vor

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Polynomial division
Divide a polynomial u by polynomial v and return the quotients only. Example: u = x^4+3*x^3+5*x+3 v = x^2+1 Answer: ...

fast 12 Jahre vor

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Average of square wave
given positive and negative peak , calculate dc level, 50% duty cycle

fast 12 Jahre vor

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Negation the hard way
Write a function that has the following property: f(f(x)) = -x for any numeric array x. Note that there is no restriction on ...

fast 12 Jahre vor

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calculate RMS voltage
given peak to peak voltage, calculate rms voltage

fast 12 Jahre vor

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Convert Two Character String into a Binary Vector
Given a string "XOXXO" convert it into a binary vector. [1 0 1 1 0] Paul Berglund implemented an optimal method in <http://ww...

fast 12 Jahre vor

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Signed Magnitude
For a given input vector, return the value that is furthest from zero. For example, if x = [1 2 -12] return -12.

fast 12 Jahre vor

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Sum the 'edge' values of a matrix
Sum the 'edge' values of an input matrix (the values along the perimeter). Example [1 2 3 4 5 6 7 8 9] Output = ...

fast 12 Jahre vor

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Sunday bonus
Submit a solution on any Sunday and you will get 10 points. Only for MATLAB fans!

fast 12 Jahre vor

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Pluralization
Define function plu(n) that returns '' (an empty string) if n=1, or 's' otherwise. This is handy for displaying messages from a...

fast 12 Jahre vor

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NO _________ ALLOWED....
So you're given a sentence where if there is a particular word in the sentence then the output is 1, if it is not there then the...

fast 12 Jahre vor

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Calculate the derivative of a polynomial
Example: in = [ 1 1 1 ] out = [ 2 1 ]

fast 12 Jahre vor

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Volume of a sphere given its surface area
You just measured its surface area, that is the input.

fast 12 Jahre vor

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Add a row of zeros on top of a matrix
Given a matrix, insert a row of zeros as the top row.

fast 12 Jahre vor

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Penny flipping - calculate winning probability (easy)
Two players are playing a fair penny flipping game. For each flip, the winner adds one penny from the loser's collection to his/...

fast 12 Jahre vor

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sinus function
x is the abscissa. find the absolute value of cosine of -x and the same value with changed sign.

fast 12 Jahre vor

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Find the logic
There exists one logic in between input and output. Find it (easy math). Example 1: x=13 then y=339; Example 2: x=26...

fast 12 Jahre vor

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Switch matrix to a column vector
for e.g. x = [1 2 3 4] y = 1 3 2 4

fast 12 Jahre vor