2) the impulse response of a discrete-time lti system t is h[n] = c1δ[n] + c2δ[n − 1] − c2δ[n − 3] − c1δ[n − 4] where c1 and c2 are real positive constants. a) is t a causal fir generalized linear phase system of one of the four types described in class? if so, which type (i, ii, iii, or iv)? explain. b) find the magnitude response |h(ω)| of the system. simplify your answer. c) find c1 and c2 so that |h(ω)| satisfies |h( π 6 )| = 1 and |h( π 3 )| = 0.6 + 0.4 √