Maple help (min/max value problem)

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SUMMARY

This discussion focuses on finding maximum and minimum values of functions using Maple, specifically for the function f(x) = ln(x)/x where x > 0. The process involves defining the function, plotting it, differentiating to find critical points, and evaluating the function at those points. Key commands include defining the function with 'f:=x→ln(x)/x', plotting with 'plot(f(x), x=1..10)', and solving for critical points using 'solve(df=0,x)'. This method provides a clear approach for new users of Maple to analyze functions effectively.

PREREQUISITES
  • Basic understanding of calculus, specifically differentiation.
  • Familiarity with Maple software and its syntax.
  • Knowledge of plotting functions in a mathematical context.
  • Understanding of critical points and their significance in function analysis.
NEXT STEPS
  • Explore advanced plotting techniques in Maple for better visualization.
  • Learn about asymptotes and inflection points in Maple.
  • Investigate the use of 'evalf' for numerical evaluations in Maple.
  • Study optimization techniques in calculus for more complex functions.
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Students, educators, and researchers in mathematics or engineering who are using Maple for function analysis and optimization.

Firben
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Hello

How can i find maximum and minimum values with help of Maple ? and asymptotes or inflextion points ? I am new to Maple.

Ex lnx/x (x>0)

How ?
 
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There are a few ways of finding the maximum and minimum values of a function in Maple. This is one of the ways I know how to do it.

defining the function

>f:=x→ln(x)/x;

Plotting the function

>plot(f(x), x=1..10);

differentiating the function

>df:=diff(f(x),x);

finding the maximum or minimum relates to where df = 0

>xmax := evalf(solve(df=0,x));

Determine the maximum

>evalf(f(xmax));

Hope this helps you. Thanks
 

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