MathGroup Archive 2000

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: Simple integral wrong


Paul Cally <cally at kronos.maths.monash.edu.au> wrote in message
news:8opmr5$15 at smc.vnet.net...
> Try integrating | cos u| from u=0 to u = Pi x. Despite the integrand
> being everywhere
> non-negative, Mathematica 4 gives a result which jumps DOWNWARDS by 2 at
>
> x=1/2, 3/2, 5/2, ....


Are you sure of that? In my copy of Math V4 the following,

             Plot[Integrate[Abs[Cos[u]], {u, 0, x  Pi]}], {x, 0, 3}]

yields a graph of a monotonically increasing function!

Cheers,

     Bill




  • Prev by Date: Manipulating Equations
  • Next by Date: Re: newbie PolarPlot question
  • Previous by thread: Re: Simple integral wrong
  • Next by thread: Re: Simple integral wrong