Q.19 Letf:[a,b] R such that f"(x) exist and continuous in [a,b] and f'(a) = f'(b). Then = [ (a) + (b)] + = (b a) "(c) for some c = (a,b) a+b 2 ( + b ) = { - [ (a) + (b)] _ {} (b-a) * (c) for some c = (a,b) - (a+b) |= [ (a) + (b)] + }(ba) " (c) for some c = (a,b) 2 None of these