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madness
Jan25-10, 06:36 AM
I just got Mathematica last night and am trying to use it for the first time. I'm trying to plot a graph f(x)=K(1-x)^{\frac{-3}{8}} but it's not working right. I tried first with K = 325 (for physical reasons) and the graph started negative at x=0. If I choose K to be almost anything other than 325 the graph starts at 0 which is also wrong. The command I gave was Plot[325(1-x)^(-3/8), {x,0,0.9}]. Did I do something wrong?

abc007
Jan25-10, 08:09 AM
download the following software which is much more easier than mathematica
http://www.grapheeasy.com/download/ge2en.exe

CompuChip
Jan25-10, 08:33 AM
Are you sure it starts at 0?
Or does it start at the crossing of the axes? Look carefully if the intersection point is indeed (0, 0), and not (0, 325).
If you insist on having it in the origin, usr


Plot[325(1-x)^(-3/8), {x,0,0.9}, AxesOrigin->{0, 0}]

madness
Jan25-10, 08:54 AM
Thanks that solves the problem. I'm really new at this so I'm still trying to get used to it all.