why i'm getting wrong answers from a simple equation

>> t = [2993;3975.9;5063;6150;6919;8192.7;8862;10240.9;11488;12409.63;13545]
>> f = @(t) (2.2/9500).*((t/9500).^1.2).*exp(-((t/9500).^2.2))
>> g = @(t) 1-exp(-((t/9500).^2.2))
>> f(t)-g(t)
>> ans =

   -0.0869                                          0.32398874
   -0.1561                                          0.39063829 
   -0.2510                                          0.31369048
   -0.3581                                          0.31787694
   -0.4370         when answers should be           ....
   -0.5654                                          ...
   -0.6286                                          ..
   -0.7437                                         
   -0.8268
   -0.8748
   -0.9194

Answer 1

[Image Analyst]

My guess is that you've probably misplaced some parentheses. Check them very carefully. And you don't need the @(t) - you can simply do

t = [2993;3975.9;5063;6150;6919;8192.7;8862;10240.9;11488;12409.63;13545]
f = (2.2/9500).* ((t/9500).^1.2).*exp(-((t/9500).^2.2))
g = 1 - exp(-((t/8900).^2.2))
results = f - g

% Plot things below.
plot(t, f, 'b.-', 'LineWidth', 2, 'MarkerSize', 20);
hold on;
plot(t, g, 'r.-', 'LineWidth', 2, 'MarkerSize', 20);
grid on;
legend('f', 'g', 'Location', 'north');

[firrou bouteflika]

thank you but i'm soryy i made a stupid mistake the f equation results should be arranged from min to max after that we do results = f - g please help me do that

and also a small mistake that doesnt matter g = 1 - exp(-((t/8900).^2.2)) 8900 should be 9500