Mathematica not plotting for me

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SUMMARY

The discussion centers on a common issue encountered in Mathematica when attempting to plot the function Plot[x^2/4 - ln[x]/2, {x, 0, 5}]. Users reported receiving a blank graph due to the incorrect use of the natural logarithm function. The correct syntax for the logarithm in Mathematica is Log[x], not ln[x]. The corrected command Plot[x^2/4 - Log[x]/2, {x, 0, 5}] successfully generates the desired plot.

PREREQUISITES
  • Familiarity with Mathematica syntax
  • Understanding of mathematical functions and their representations
  • Basic knowledge of plotting functions in Mathematica
  • Experience with logarithmic functions
NEXT STEPS
  • Explore Mathematica's documentation on plotting functions
  • Learn about the differences between Log[x] and ln[x] in Mathematica
  • Investigate common errors in Mathematica plotting and their solutions
  • Practice plotting various mathematical functions in Mathematica
USEFUL FOR

Students, educators, and researchers using Mathematica for mathematical modeling and visualization who need to troubleshoot plotting issues.

flyingpig
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Homework Statement



I've been trying to plot

Plot[x^2/4 - ln[x]/2, {x, 0, 5}]

And it keeps showing me a blank graph. I did it on Wolframalpha and it worked.
 
Physics news on Phys.org
A blank graph means it didn't understand something in your expression. In this case it is ln[x], which needs to be Log[x]. Try:

Plot[x^2/4 - Log[x]/2, {x, 0, 5}]
 
thanks
 

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