Chapter 4: Programming in Matlab - College of the Redwoods

292 Chapter 4 Programming in Matlab
Eliminate complex numbers.
k=real(y)~=y;
y(k)=NaN;
Open a new figure window and
replot. Turn on the grid.
figure
plot(x,y)
axis([-10,10,-10,10])
grid on
27. Define the anonymous function.
f=@(x) 2+sqrt(x+5);
The domain of y = 2 + √ x + 5
is the set of all real numbers greater
than or equal to −5. Evaluate the
function on [−5, 10] and plot the result.
x=linspace(-5,10,200);
y=f(x);
plot(x,y)
Adjust the window boundaries
and add a grid.
axis([-10,10,-10,10])
grid on