Chapter 4: Programming in Matlab - College of the Redwoods

Section 4.1 Logical Arrays 293
29. Define the anonymous function.
31. Define the anonymous function.
f=@(x) sqrt(9-x.^2);
f=@(x,y) sqrt(1+x);
The domain of y = √ 9 − x 2 is
the set of all real numbers greater than
or equal to −3 and less than or equal
to 3. Evaluate the function on [−3, 3]
and plot the result.
x=linspace(-5,10,200);
y=f(x);
plot(x,y)
Adjust the window boundaries
and add a grid.
Set up the grid.
x=linspace(-3,3,40);
y=x;
[x,y]=meshgrid(x,y);
Evaluate the function at each (x, y)
pair in the grid and plot the resulting
surface.
z=f(x,y);
mesh(x,y,z)
axis([-10,10,-10,10])
grid on