I need to define two functions for a molecule with speed s. a)it has a horizontal velocity between -s and s b) v , the vertical velocity between +Sqrt[s^2-u^2] and -Sqrt[s^2-u^2] This is what I have done for a) Code (Text): f[s_]:=RandomReal[{-s,s}] for b) Code (Text): g[s_,u_]:=RandomReal[{-Sqrt[s^2-u^2],+Sqrt[s^2-u^2]}] now , If I enter f[2] I get u, so I have s and u from first code. How do I use these values in the second code (without manually inputting them)? Thanks a bunch
Yes ,thats what I want ..But how do I put into mathematica ? If just insert what you have written I get RandomReal::unifr: "The endpoints specified the uniform distribution range are not real valued I also Tried, Code (Text): g[s_] := RandomReal[{-Sqrt[s^2 - f[s]^2], +Sqrt[s^2 - f[s]^2]}] However , what it does in this case is , finds f for -Sqrt[s^2 - f^2] and +Sqrt[s^2 - f^2] seperately , so I get different f in that case.. Any ideas?
I believe that's because the arguments to RandomReal have to be real. But for example if I entered: g[2,f[3]] the argument passed to Sqrt results in a complex number. Either need to make sure s^2-u^2 is real or either use RandomComplex.