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Error plotting logarithmic function?

Posted 5 months ago
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enter image description here

Been stuck on this for hours. Can someone help me identify the problem? I can't seem to graph my second logarithmic function. Thanks.

3 Replies

The second Plot uses u[x] instead of u1[x], which is not defined. This version works:

PS. the PlotStyle option should be

u2[x_] := 0.5 Log[x] + 0.8 Log[6]
Plot[{u2[x], u1[x]}, {x, 0, 10}, 
 PlotStyle -> {{Blue, Thickness[0.01]}, {Red, Thickness[0.01]}}]

Welcome to Wolfram Community! Please make sure you know the rules: https://wolfr.am/READ-1ST

The rules explain how to format your code properly. Images don't help other members to copy your code. Please EDIT your post and make sure code blocks start on a new paragraph and look framed and colored like this.

int = Integrate[1/(x^3 - 1), x];
Map[Framed, int, Infinity]

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