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eval, deval

eval(obj[,prec])
deval(obj)
:: Evaluate obj numerically.
return
number or expression
obj
general expression
prec
integer
[118] eval(exp(@pi*@i));   
-1.0000000000000000000000000000
[119] eval(2^(1/2));
1.414213562373095048763788073031
[120] eval(sin(@pi/3));
0.86602540378443864674620506632
[121] eval(sin(@pi/3)-3^(1/2)/2,50);
-2.78791084448179148471 E-58
[122] eval(1/2);
1/2
[123] deval(sin(1)^2+cos(1)^2);
1
References
section ctrl, section setprec, section pari.


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