116. a. b. 117. a. b. 118. a. b. (−a) = (a) = 1 f f 4 (a) + (a + 2π) + (a − 2π) f f f = + + (a) (a) (a) f f f = 1 + 1 + 1 4 4 4 = 3 4 (−a) =− (a) = − 2 f f (a) + (a + π) + (a + 2π) f f f = (a) + (a) + (a) f f f = + + 2 2 2 = 6 (−a) =− (a) = − (−3) = 3 f f (a) + (a + π) + (a + 4π) f f f = + + (a) (a) (a) f f f = −3 + (−3) + (−3) = −9 (−a) = (a) = − 4 f f + + + + (a) (a 2π) (a 4π) f f f = (a) + (a) + (a) f f f = − 4 + (− 4) + (− 4) = −12 =− = − (−a) (a) 2 f f (a) + (a + 2π) + (a + 4π) f f f = + + (a) (a) (a) f f f = 2 + 2 + 2 = 6
116. a. b. 117. a. b. 118. a. b. f (−a) = f (a) = 1 4 f (a) + f (a + 2π) + f (a − 2π) = f (a) + f (a) + f (a) = 1 + 1 + 1 4 4 4 = 3 4 f (−a) =− f (a) = − 2 f (a) + f (a + π) + f (a + 2π) = f (a) + f (a) + f (a) = 2 + 2 + 2 = 6 f (−a) =− f (a) = − (−3) = 3 f (a) + f (a + π) + f (a + 4π) = f (a) + f (a) + f (a) = −3 + (−3) + (−3) = −9 f (−a) = f (a) = − 4 f (a) + f (a + 2π) + f (a + 4π) = f (a) + f (a) + f (a) = − 4 + (− 4) + (− 4) = −12 f (−a) =− f (a) = − 2 f (a) + f (a + 2π) + f (a + 4π) = f (a) + f (a) + f (a) = 2 + 2 + 2 = 6
62514-0132318806_ISM_02-1.docx