What is correct script for below question?

Use fplot to graph f(x) over x from -pi to pi .

Do i need to mention the value of x as well or not?

if yes then x=[0,1,pi/2,pi]

Script:

f=@(x) x.^2-sin(x)+(1./x);

x=[0,1,pi/2,pi];

fplot(f(x),[-pi,pi])

then

is this correct?

[Temu Gautama]

fplot( f, [-pi pi] )

Answer 1

[KALYAN ACHARJYA]

here fplot x ranges -pi to pi

f=@(x) x.^2-sin(x)+(1/x);
fplot(f,[-pi pi]);

Now get the f value with x_data=x=[0,1,pi/2,pi], hopfully you may get inf,1.1585, 2.1040, 10.1879

With fixed value of x, you definitely get constant (straight line)