Chapter 4 Problem solution 4.4 Determine the inverse Fourier transform (a)x, a)=2rdo+rdo 4z+rda+4r) x;(a)= 1+cos4丌t Y, Go) 20≤≤2 )xjo)=1-2-2≤O<0 -20 2 0a>2 2 2()=4sim2 t2 Chapter 4 Problem Solution 4.4 Determine the inverse Fourier transform: (a) ( ) 2 ()  ( 4 )  ( 4 ) X1 j = + − + + x (t) 1 cos4πt 1 = + ( ) ( )       −     = 0 2 - 2 2 0 2 0 2 b 2    X j -2 0 2 ω 2 -2 X (j) 2 ( ) t j t x t  2 2 4sin =