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Multiply to the limit?

If y = 4*x*x/pi/pi then what is the ultimate limiting result of (1+y/1/1)(1+y/3/3)(1+y/5/5)(1+y/7/7)... ... within 1000*eps?

9 years ago

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Back to basics 23 - Triangular matrix

Covering some basic topics I haven't seen elsewhere on Cody. Given an input matrix, return a matrix with all elements above a...

9 years ago

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Angle between two vectors

You have two vectors , determine the angle between these two vectors For example: u = [0 0 1]; v = [1 0 0]; The a...

9 years ago

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Einsteinium-253 decay

Radioactive Einsteinium-253 has a half-life of 1,768,608 seconds. Given 1000mg of Einsteinium-253 at t=0 days, how much is lef...

9 years ago

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capable husband?

* The prospective husband must pass a background check, * and *functions* faithfully, as suggested by <http://www.mathworks.com...

9 years 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...

9 years ago

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Back to basics 20 - singleton dimensions

Covering some basic topics I haven't seen elsewhere on Cody. Remove the singleton dimensions from the input variable (e.g. if...

9 years ago

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Convert String to Morse Code

Convert a given string to international <http://en.wikipedia.org/wiki/Morse_code Morse Code> * Strings will only have [A-z], ...

9 years ago

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Column norms of a matrix

Given a matrix M, return a vector y such that for each k y(k)=norm(M(:,k)) (y(k) is the Euclidean norm of the k-th col...

9 years ago

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Find indices of multiple minima in a vector

I have a vector, say: x= [ 1 5 6 2 6 1 3 5 1] Now I would like to get the index of the minimum values in this vector. When...

9 years ago

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Back to basics 14 - Keywords

Covering some basic topics I haven't seen elsewhere on Cody. Return a cell array of all MATLAB keywords

9 years ago

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N-Dimensional Array Slice

Given an N-dimensional array, _A_, an index, _I_, and a dimension, _d_, return the _I_ th elements of _A_ in the _d_ dimension. ...

9 years ago

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commutative?

Given the handle to a binary function that takes two ordinary numbers, test if the function is commutative.

9 years ago

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Specific Element Count

Given a vector _v_ and a element _e_, return the number of occurrences of _e_ in _v_. Note: NaNs are equal and there may be n...

9 years ago

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Who knows the last digit of pi?

There is only one man who knows the last digit of pi, who is that man? Give the name of that man, who, by popular believe, can ...

9 years ago

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Back to basics 1 - Saving

Covering some basic topics I haven't seen elsewhere on Cody. Given an input variable 'x', save it to disk in a file named 'co...

9 years ago

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Size of this cup?

The given vector has diameter of the cup in mm sampled at micrometer increments in depth from top to bottom, need output in cc a...

9 years ago

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Find last non-zero in a given dimension

You are given a logical matrix *BW* _of any dimension_, and a dimension *dim*. You need to find the locations of the last non-ze...

9 years ago

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Poker Series 04: isFlush

The Poker Series consists of many short, well defined functions that when combined will lead to complex behavior. Our goal is t...

9 years ago

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Similar Triangles - find the height of the tree

Given the height, h1, of a power pole, shorter than a tree, a given distance, x2 away, please find h2, height of the tree. Pleas...

9 years ago

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Specific toolboxes

Given a string that is the name of a MATLAB toolbox, return true if it is available on the Cody solvers evaluation system, false...

9 years ago

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Number of toolboxes?

Return a number equal to the number of toolboxes available to the Cody solvers.

9 years ago

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Poker Series 03: isFullHouse

The Poker Series consists of many short, well defined functions that when combined will lead to complex behavior. Our goal is t...

9 years ago

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Poker Series 02: isQuads

The Poker Series consists of many short, well defined functions that when combined will lead to complex behavior. Our goal is to...

9 years ago

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Circumscribed circles

Given the lengths of the 3 sides of a triangle, output the radius of the circumscribed circle. Example: [3 4 5] -> 2.5

9 years ago

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Find Rotated Substring

Given a string s1, find if a rotated version of s1 is present in a second string s2. For example, rotated version of some str...

9 years ago

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Poker Series 01: isStraightFlush

The Poker Series consists of many short, well defined functions that when combined will lead to complex behavior. Our goal is t...

9 years ago

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Make a function that returns its own character count

Write a function that returns a 128 element vector with an accurate inventory of the ASCII characters in its own function file. ...

9 years ago

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Trickier Timing

You solution should return control to main program only when the current time ends in either a 5 or 0 (e.g. the current seconds ...

9 years ago