How do I design a graphing calculator with this condition.

Question

Kiha Kim 2022-2-3

移动：Voss 2024-11-21，17:51

I'm need to use disp, input, fevel and plot function.

I have 5 options for functions: Sin, Cos, Tan, Log, Exp.

Rik 2022-2-3

This looks like homework to me. What did you try?

Answer 1

Voss 2022-2-3

移动：Voss 2024-11-21，17:51

This will create a cell array of handles to your functions:

funcs = {@sin @cos @tan @log @exp};

Then you can get user input for selecting a function using input(), say an integer between 1 and 5. Call it idx.

Then you can get user input for specifying a domain using input(), say a 1-by-2 vector of doubles. Call it domain.

Then you can execute the selected function over that domain like so:

x = linspace(domain(1),domain(2),100); % 100 equally-spaced x values
y = feval(funcs{idx},x); % value of the function at each x value

Then plot and add grids, labels and title.