How to compute derivative in Maxima -

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In Maxima, want to calculate the seventh outline of tan (x) at x = pi / 4:

F (x): = diff (tan (x), x, 7); F (% PI / 4);

Still I can not get the results. I am a new user of Maxima and I can not find any related topics on the line. Please help me, thank you!

I will do this, 

 at  (diff (tan X), x, 7), [x =% pi / 4]);

The function diff gives a function as its result You can evaluate this function by using the on function.

The second way to do this is like this, 

  f: diff (tan (x), x, 7); On (f, [x =% pi / 4]);

Now there is only one variable that produces diff and then used on Evaluate it at one point.

I hope it will be helpful.


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