MATLAB: How to estimate/evaluate the integral of a constant value function

Question

For example, f = 5, for 0<t<1, zero otherwise.

i tried the following code but it didn't work:

syms t
f = 10;
int(f)

Answer 1

syms t a b real
f = piecewise(0 < t & t < 1, 5, 0)
f = 
int(f, t, a, b)
Warning: Unable to check whether the integrand exists everywhere on the integration interval.
ans =