What is this doing...?...

*To*: mathgroup at smc.vnet.net*Subject*: [mg14775] What is this doing...?...*From*: Mitch Padua <vpadua at csufresno.edu>*Date*: Sat, 14 Nov 1998 03:08:05 -0500*Organization*: California State University, Fresno*Sender*: owner-wri-mathgroup at wolfram.com

I've having some trouble interpreting a graph I receive in mathematica, maybe someone can help? Here's what I have: Normal[Series[Sin[x], {x,0,#}]]& /@ {1,3,5,7} f[#]& /@ {arg1, arg2, arg3} Join[{a,b,c}, {d,e}] plotts[fx_, a0_: 0, {x_,a_,b_}, k_List, opt___] :=Plot[Evaluate[Join[Normal[Series[fx,{x,a0,#}]]& /@ k, {fx}]], {x,a,b}, opt] now I type the command to graph: plotts[Log[x+1], {x, -.99,2}, {1,3,25}, PlotRange->{-5,2}] and all is well however when I change the 25 to 30 I get a different graph, why? What is going on here? I believe this is a Taylor series or something, but can someone explain to me when I change the plotts[Log[x+1], {x, -.99,2}, {1,3,25}, PlotRange->{-5,2}] to plotts[Log[x+1], {x, -.99,2}, {1,3,30}, PlotRange->{-5,2}] I get a different graph? I must admit I've only used mathematica for about 15 minutes...so an explanation as to why this graph is changing would really help. Thanks, -- ____/| Vincent M. Padua (vincent at psnw.com) \ o.O| =(_)= "Thou shalt not follow the NULL pointer for U chaos and madness await thee at its end."