Multiply a column by a row
* Given a column vector C and and a row vector R.
* Output a matrix M.
* Every column of M equals to C multiplied by correspon...
~~~~~~~ WAVE ~~~~~~~~~
|The WAVE generator|
Once upon a time there was a river. 'Sum' was passing by the river. He saw the water of the river that w...
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Number of Horns on a unicorn!
Calculate the number of horns on a *unicorn*!
And I'm talking about a unicorn with not more than one horn on it!
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How to subtract?
*± ± ± ± ± ± ± ± ± ± ±*
* Imagine you need to subtract one...
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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?