MathGroup Archive 2012

[Date Index] [Thread Index] [Author Index]

Search the Archive

Subscript in parameter names

You define functions in Mathematica like this:

c[a_, b_]:= ^2a^6+b^6

Giving Sqrt[a^2+b^2]

But how will you define a function with a parameter with a subscript,

L[L^_0^ _,v]:=L^_0*^21-^/v^6 c^6

Giving L[L0,v]:= L0*Sqrt[1-v^2/c^2]

Except that L0 should be with a real subscript.

In this example, c is 299,792,458 m/s, L0 the proper length in the
velocity direction of an object with speed v relative to the observed
lenght L from an intertial system with speed 0.
Per Erik Rønne
Errare humanum est, sed in errore perseverare turpe

  • Prev by Date: Re: Fourier Transform of a "step" function
  • Next by Date: Second derivatives
  • Previous by thread: Re: Fourier Transform of a "step" function
  • Next by thread: Re: Subscript in parameter names