Get a numerical result after a symbolic declaration.

Initially, I declared the symbolic variable q, but I need to get the results by replacing the value of q found. Once note q, I no longer want the symbolic result, but the numeric result.

Also, I should do the symbolic integration of x * dx * dy between 0 and x, 0 and y knowing that y = mx + q

Answer 1

[madhan ravi]

subs(F_D,q)