How to graph the equation f(x)=tan(x-4)-0.4x over the interval [-5.5]?

I used the following commands

x=-5:0.1:5;
y=tan(x-4)-0.4x;
plot(x,y);

sorry for my english

Homework assignment?

yes, I’m learning to use it for academic purposes, but I’m having difficulties

The example is almost correct. I’m guessing the assignment is to find the error in the code snippet.
Hint: You need to type out all operators…

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Passolargo
December 23

I used the following commands

x=-5:0.1:5;
y=tan(x-4)-0.4x;

In Octave this should be 0.4*x

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Hi Passolargo.
type help axis to involve in it. It can help you.
Enjoy :slight_smile:

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