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This is my code (I'm trying to graphically show the L'Hopital approximation of an isoelastic function):

p1 = Plot[Log[x],{x, 1, 20}]
p2 = Manipulate[Plot[x^(1-a)/(1-a),{x, 1, 20}], {a,0,1}]
Show[p1,p2]

I get the following error:

Coordinate Skeleton[1] should be a pair of numbers, or a Scaled or Offset form.

How do I fix this? I've been trying a number of different solutions but they don't seem to work (apologies for the silly question - new to Mathematica).

José Antonio Díaz Navas
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Thev
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    Show can't combine Graphics and Manipulate, you can use Manipulate[Show[plots...],..]. You can use this trick to not recalculate 'static' Log plot: 148405 – Kuba Feb 06 '18 at 13:52
  • @Kuba I tried that and i'm still getting an error. What should my code be, exactly? – Thev Feb 06 '18 at 14:11

1 Answers1

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Better to combine both plots with Manipulate:

Manipulate[Plot[{Log[x], x^(1 - a)/(1 - a)}, {x, 1, 20}], {a, 0, 0.999}]

enter image description here

José Antonio Díaz Navas
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