only problem b) part ii and iii please!

> Solve 4.21 (b) three different ways: 4.21. Complete Frare transform of each of the following signal (a) cos > c) 11+cos.SI id) 86-1 le) *4 2013 was shown in Figure 1.2 as shown in Figure 4.31 ca- ! -0 Solve 4.21 (b) three different ways: 4.21. Complete Frare transform of each of the following signal (a) cos > c) 11+cos.SI id) 86-1 le) *4 2013 was shown in Figure 1.2 as shown in Figure 4.31 ca- ! -0