Mathematica Weirdness

*To*: mathgroup at smc.vnet.net*Subject*: [mg116661] Mathematica Weirdness*From*: Steve Heston <sheston at rhsmith.umd.edu>*Date*: Wed, 23 Feb 2011 05:23:49 -0500 (EST)

My question is why I get a negative integral of a positive function? Integrate[1000000*Exp[x^2-12*x]*x^14,{x,0,1}]//N Integrate[1000000*Exp[x^2-12*x]*x^14,{x,0.,1}]//N NIntegrate[1000000*Exp[x^2-12*x]*x^14,{x,0,1}] The first line gives a negative answer, while the second two lines give identical positive answers. Something is strange here. Steve Steven L. Heston Associate Professor Finance Department Robert H. Smith School of Business 4447 Van Munching Hall Van Munching Hall University of Maryland College Park, MD 20742-1815 301-405-9686 TEL 301-405-0359 FAX sheston at rhsmith.umd.edu http://www.rhsmith.umd.edu