Question

Use an anonymous function instead of a function file that calculates y(x) = sin(2x)( 4x2 + 3 ). Plot it using fplot, x goes from -8 to 8. Use your function to print out the value of y for x = -1.25 and x = 1.25.

Deliverables:

Script with anonymous function

Plot using fplot

Command window output

Step by Step Instructions:

Copy your calling script from Problem 1

Change the name of the function to be LabFcAnonymous (or something similar)

Write the LabFcAnonymous function BEFORE you call it

LabFcAnonymous = @(x) …

Remember to take the @ out of the fplot – you don’t need it because LabFcAnonymous is already a reference to a function

Answer 1

LabFcAnonymous = @(x)sin(2.*x).*(4*x.^2 + 3); %define anonymous function
fplot(LabFcAnonymous, [-8 8]) %use the function to calculate y from x = -8 to 8
y1 = LabFcAnonymous(-1.25) %print the value of function at x = -1.25
y2 = LabFcAnonymous(1.25) %print the value of function at x = 1.25

y1 = -5.5359 y2= 5.5359 @(x) sin (2.*x).* (4* x.2+3) 200 100 -100 -200- 300 -8 -6 -4 -2 2 4