a question about plot a list of functions.
- To: mathgroup at smc.vnet.net
- Subject: [mg58203] a question about plot a list of functions.
- From: Zhou Jiang <jiangzhou_yz at yahoo.com>
- Date: Wed, 22 Jun 2005 01:55:51 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
I defined a function as K=(2 r/(1-r^2))^2; y=1/(1+K (Sin[x])^2); y=y/.{r->{0.2,0.9,0.995}} Now the result is a list. I want to plot y vs. x in one figure and I did the following Plot[y, {x, 0, 10 Pi}]; But Mathematica gave me an error. I changed it to Plot[{y[[1]], y[[2]], y[[3]]}, {x, 0, 10 Pi}]; Mathematica gave me a correct plot. Can anyone give me some idea why the error message is given by Mathematica since y is a list and nothing is diffrent from {y[[1]], y[[2]], y[[3]]}? Thanks.
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- From: Andrzej Kozlowski <andrzej@akikoz.net>
- Re: a question about plot a list of functions.