when is y=x+a not a straight line?
- To: mathgroup at smc.vnet.net
- Subject: [mg129005] when is y=x+a not a straight line?
- From: Richard Fateman <fateman at cs.berkeley.edu>
- Date: Sat, 8 Dec 2012 01:28:56 -0500 (EST)
- Delivered-to: l-mathgroup@mail-archive0.wolfram.com
- Delivered-to: l-mathgroup@wolfram.com
- Delivered-to: mathgroup-newout@smc.vnet.net
- Delivered-to: mathgroup-newsend@smc.vnet.net
Try this
a=0``-0.5
ListPlot[Table[{x, a + x}, {x, -10, 10}], Joined -> {True}]
This is probably not a surprise to some people.
If you think the value for "a" could never happen, try this:
a=N[1,20]
Do[a=2*a-a,{43}]
Compare to Plot[x+a,{x,-1,10}]
which shows that Plot evaluates its first argument in an manner
inconsistent with Table's method.
Cheers.
RJF