In Big Theta notation used for defining the running time of an algorithm, are the constants $c_1$ and $c_2$ different for every value of $n$?
Definition:
$\qquad \displaystyle \Theta (g(n)) = \{ f(n): \exists\, c_1,c_2,n_0>0. \forall n \geq n_0.\ \ c_1g(n) \leq f(n) \leq c_2g(n) \}.$