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Tuesday, May 5, 2009

Mathematica TIP

Suppose you have to enter 1+x_x^2+...+x^n in full in Mathematica. An easy way to do this is as follows ( for n=11 ).

p[x_]:=Total[Array[x^(#-1)&,12]]

x^11+x^10+x^9+x^8+x^7+x^6+x^5+x^4+x^3+x^2+x+1
Posted by at 4:55:00 PM
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(Raumpatrouille – Die phantastischen Abenteuer des Raumschiffes Orion, colloquially aka Raumpatrouille Orion was the first German science fiction television series. Its seven episodes were broadcast by ARD beginning September 17, 1966. The series has since acquired cult status in Germany. Broadcast six years before Star Trek first aired in West Germany (in 1972), it became a huge success.)