Not sure how to write this script using if,else if

Consider the piece wise function

F(t) = {t^2e^2.   -8<=t<=-2
        2t+1.     -2<t<=4
        Cos(3t)sin(6t).  4<t<=8

Write a matlab script that calculates f(t) for any supplies legal value for t, and plot the function over the interval [-8,8] if the user chooses to.

Requirements:

1. - the user must supply the value of t at which the function is evaluated
2. - script must generate an error message if the value of t is outside the interval [-8,8]
3. - calculated f value must be displayed using 3 digits after decimal point

Answer 1

[Image Analyst]

Hint:

function ft = F(t)
if -8 <= t && t <= 2
  ft = t^2 * exp(2);
elseif

You finish it. And to ask the user in your main, calling routine use questdlg() and call F(t) for values of t in that range....

message = sprintf('Do you want to plot F(t) over [-8,8]?');
reply = questdlg(message, 'Plot?', 'Yes', 'Yes', 'No');
    if strcmpi(reply, 'Yes')
        for t = -8 : 0.1 : 8
            f(t) = F(t);
        end
        plot(

Again, try to finish it.