How can you choose from a case-by-case result?

Question:How can you choose from a case-by-case result?

Posted: lt 80

March 09 2015

If you have several results, e.g. one being real, the others complex. How can you choose?

v := proc (R) options operator, arrow; 2332800000/(Pi*(R^3*AU^3/(G*M))^.5) end proc;

proc (R) options operator, arrow; 2332800000/(Pi*(R^3*AU^3/(G*M))^.5) end proc

(1)

a := solve(.601 = 60*(360*60)/(2*Pi*((R*AU)^3/(G*M))^.5)*3600, R);

(2)

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