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+--- Thread: Why The function APP failled to find an extremum in this case (/thread-5135.html)
Why The function APP failled to find an extremum in this case - dg1969 - 11-15-2015 10:03 AM
Good morning dear "Primers",
Can you explain why the function App failed if i ask for an extremum of \(f(x)\)?
\(f(x)=\frac{1}{9} \cdot (84\cdot x e^{-3\cdot x}-2 e^{-3\cdot x}+2)\)
Code:
f(x):=1/9*(84*x*e^(-3*x)-2*e^(-3*x)+2)1) I create \(f(x)\) in CAS side. Have you notice the Latex command ? Did you know that ? !
CTRL+C CTRL+V to paste on these post !!! ;o) Thank's to M. PARISSE !
2) I choose F1(X)=f(X)
Here notice that the EVAL softKey do nothing !? Why ?
3)Plot and choose "EXTREMUM"
4) Can't find an extremum !!
Thank's for reading.
Didier
RE: Why The function APP failled to find an extremum in this case - primer - 11-15-2015 11:20 AM
Hi,
in CAS environment, you have to type F1:=f
instead,
and it should work.
RE: Why The function APP failled to find an extremum in this case - dg1969 - 11-15-2015 02:53 PM
(11-15-2015 11:20 AM)primer Wrote: Hi,
in CAS environment, you have to type F1:=f
instead,
and it should work.
Thank you , it works. But I continue to think that there is something to improve...