"maia " <email@example.com> wrote in message news:firstname.lastname@example.org... > can i use quadl for blow function > f=@(x,y) (a*x+b*y); > > if i want integrate it due to only x how should i write it? > > like this > > quad(f, x ,0,pi)
For a fixed value of y, you mean?
y = 2; quad(@(x) f(x, y), 0, pi);
Symbolically, leaving y unevaluated so you receive a function of y? You will need to define x and y as a symbolic value then use the _symbolic_ integration routine INT.
syms x y newf = f(x, y) int(newf, x, 0, pi)
This assumes that your function is only using operations that are defined for symbolic variables.