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IsExact


Let c be a 1D list of scalar coefficients, numeric or symbolic,
real or complex. No entry is a list. Examples:

ClearAll[n,x,y,a,a1,a2,b,r];
c1={1,2*I/5,E^(25*n),3/4+I,Cos[n*x*Pi],y*Sqrt[-5]};
c2={a/b,r+2/5,a1,,,,,a2};
c3={1.5,0,Sqrt[3],0,4};
c4={(r+0.5)/3,3/7,3+Sin[4*x*y]};
c5={1,2,3,4,5,6}+0.0;
c6={N[x]};

I need a function IsExact[c] that returns False if
at least one entry of c is floating, or if it contains one
floating number; else True.  For example, tests on
c1 and c2  should return True; the others False.

Any simple way to implement this? It should work on V.5.
Thanks.



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