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From: Herman J. <jar...@gm...> - 2015-10-19 20:40:00
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Here is the example: (%i38) ztot; (%o38) sqrt(50-2*5^(3/2))/5-sqrt(sqrt(5)-5)*sqrt(sqrt(5)-3)*(3*sqrt(5)+5)/20 (%i39) ev(ztot, numer); (%o39) 1.902113032590307 (%i40) ztot1 : rootscontract(ztot); (%o40) sqrt(50-2*5^(3/2))/5-sqrt(20-8*sqrt(5))*(3*sqrt(5)+5)/20 (%i41) ev(ztot1, numer); (%o41) .2008114158862273 Please observe that the value of "1.90..." was changed to ".2008".... why is "rootscontract" changing the value of my expression? it should not right? Herman Jaramillo |