Plot[] acting funny (help)

*To*: mathgroup at yoda.ncsa.uiuc.edu*Subject*: Plot[] acting funny (help)*From*: antonyc at tybalt.caltech.edu (Bill T. Cat)*Date*: Tue, 22 Jan 91 11:19:54 GMT

I have a sort of unexpected problem with mathematica. i tried the following: Plot[NIntegrate[((Sin[t x])^2),{x,0,Pi}],{t,0,10}] this should give some sort of plot which is always positive, since the integrand is the square of a real. however, this function has some sort of problem for t<2 on this plot. plotting from {t,0,1.7} yields a more convincing plot, but {t,0,1.8} gives the same sort of error as {t,0,10}. Is something wrong with my understanding of this function? the command plots the integral against the parameter t, right? any help would be appreciated. thanks. antonyc at coil.cco.caltech.edu