Difference between revisions of "Manuals/calci/Pascal Triangle Fun"

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=== Sierpiński triangle ===
 
=== Sierpiński triangle ===
 +
 +
[https://en.wikipedia.org/wiki/Sierpi%C5%84ski_triangle Sierpierski Triangle]
 +
 
<pre>
 
<pre>
 
//with 32
 
//with 32
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</pre>
 
</pre>
−
 
  
 
===Fibonacci and Pascal Triangle===
 
===Fibonacci and Pascal Triangle===
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)
 
)
 
</pre>
 
</pre>
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 +
 +
==Pascal Triangle and Figurate Numbers==
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 +
PASCALTRIANGLE(10)
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[https://en.wikipedia.org/wiki/Figurate_number]
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[https://www.mathsisfun.com/algebra/triangular-numbers.html Triangular Numbers]
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[https://en.wikipedia.org/wiki/Tetrahedral_number Tetrahedral Numbers]
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[https://en.wikipedia.org/wiki/Figurate_number Figurate Number]
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<pre>
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figuratenumbers=(n,r)=>(n+r-1)!C!r;
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a=[1..10,0..10]@figuratenumbers;
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a.parts(10)
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</pre>
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 +
==Lucas, Fibonacci, Golden Ratio Relationship ==
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 +
<pre>
 +
FIBONACCI(50)
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LUCAS(50)
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FIBONACCI(50)
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.pieces(2)
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.map(r=>r[1]/r[0])
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 +
GOLDENRATIO()
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 +
LUCAS(50)
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.pieces(2)
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.map(r=>r[1]/r[0])
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 +
ROUND((GOLDENRATIO())^(1..10))
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[(1+√5)/2,(1+√5)/2]
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ops.on;
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[(1+√5d100)/2,(1-√5d100)/2]
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</pre>
 +
  
 
===Pretty Pascal Triangle===
 
===Pretty Pascal Triangle===

Latest revision as of 12:33, 7 August 2020


Pascal Triangle Fun

Sierpiński triangle

Sierpierski Triangle 

//with 32
m=32;
pt=PASCALTRIANGLE(m).$(x=>x%2)
a=pt
	.map(
		function (r,i)
		{
			var prefix= (REPEATCHAR(" ",(2*m-(2*i+1))/2).split(""));
			 return(
				  prefix
		 			.concat(r.join(", ,").split(","))
		 			.concat(prefix)
			)
		}
	);
(a);

Fibonacci and Pascal Triangle

FIBONNACI(100)
b=PASCALTRIANGLE(100)
b.map(
	function calcfib(r,i,d)
	{
		var fib=0;
		var j=0;
		for(var xi=i;xi>=0;xi--)
		{
			fib+=isNaN(d[xi][j])?0:d[xi][j];
			j++;
		}
		return(fib)
	}
)


Pascal Triangle and Figurate Numbers

PASCALTRIANGLE(10)

[1]

Triangular Numbers

Tetrahedral Numbers

Figurate Number 

figuratenumbers=(n,r)=>(n+r-1)!C!r;
a=[1..10,0..10]@figuratenumbers;
a.parts(10)

Lucas, Fibonacci, Golden Ratio Relationship

FIBONACCI(50)

LUCAS(50)

FIBONACCI(50)
	.pieces(2)
	.map(r=>r[1]/r[0])
	
GOLDENRATIO()	
	
LUCAS(50)
	.pieces(2)
	.map(r=>r[1]/r[0])

ROUND((GOLDENRATIO())^(1..10))

[(1+√5)/2,(1+√5)/2]

ops.on;
[(1+√5d100)/2,(1-√5d100)/2]


Pretty Pascal Triangle

m=10;
pt=PASCALTRIANGLE(m)
pt
	.map(
		function (r,i)
		{
			var prefix= (REPEATCHAR(" ",(2*m-(2*i+1))/2).split(""));
			 return(
				  prefix
		 			.concat(r.join(", ,").split(","))
		 			.concat(prefix)
			)
		}
	);



Now we can use:

PASCALTRIANGLE(10,true)





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