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Unexpected Output When Plotting...

  • To: mathgroup at smc.vnet.net
  • Subject: [mg125450] Unexpected Output When Plotting...
  • From: James Kochanski <jwkochanski at mymail.vcu.edu>
  • Date: Wed, 14 Mar 2012 00:40:24 -0500 (EST)
  • Delivered-to: l-mathgroup@mail-archive0.wolfram.com

Can anyone explain to me why Graphs #5 and #6 (please see below) do not include any output for x < 0 and x < -1, respectively? 

Thanks!

Jim Kochanski

Following graphs are plotted from x = -10 to x = 10
Graph #1 :    Plot[Cos[x], {x, -10, 10}]
Graph #2 :    Plot[Cos[x + 1], {x, -10, 10}]
Graph #3 :    Plot[Cos[x^3], {x, -10, 10}]
Graph #4 :    Plot[Cos[x^3 + 1], {x, -10, 10}]

Following graph is only plotted from x = 0 to x = 10
Graph #5 :    Plot[Cos[(x^3)^(1/3)], {x, -10, 10}]

Following graph is only plotted from x = -1 to x = 10
Graph #6 :    Plot[Cos[(x^3 + 1)^(1/3)], {x, -10, 10}]



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