Integration over function between two limits

format compact
syms x
f(x) = sin(x)
q = integral(f(x),0,pi)

when I run this I am facing the following error :

"Error using integral (line 82)

First input argument must be a function handle.

Error in integ (line 4)

q = integral(f(x),0,pi) "

Could you please explain why i am unable to put f(x) as a first input argument in the integral after defining the variable x.

Answer 1

[KALYAN ACHARJYA]

syms x
f_x=@(x) sin(x)
q = integral(f_x,0,pi)

[Sharath Kumar]

Thank You kalyan ! It worked.

Answer 2

[Walter Roberson]

integral() is used only for numeric integration.

For symbolic integration, use int() if you want to see the closed form solution (if it exists), or use vpaintegral() for symbolic numeric solutions.

[Sharath Kumar]

Thanks Walter !