
Square
wave:
AA
1
1
x(t)
=
(saitot
+
—
sin3o>*
+
—
sin5o?
+
)
7t
3
5
2
11
*(0
=
—
(sin2
n
4000
t
+
—
sin2n
12000
t
+
—
sin2it20000
t
+
)
%
3
5
*(/)
=
J—
YW
+
4000
)
+
W
-
4000
)
+
-6(^
+
12000
)
+
-
b(f
-
12000
)
+
7c
3
3
-
b(f
+
20000
)
+
-
6(7
-
20000
)]
5
5
Sine
+
Square
wave:
12
1
x(t)
=
—
sin27cl000*
+
—
(äW2TC4000^
+
—
SüI2TC
12000
t
2
7C
3
+
—
sin27i20000
t
+
)
5
X(f)
=
J-
[
6
(
/
r+
100
°)
+
W-
1°
00
)
]
+J—
[
ö
(
/"
+
4000)
+
6(f-
4000)
2
TU
+
—
b(f
+
12000
)
+
-
6(/*
-
12000
)
+
-
6(/"
+
20000
)
+
—
b(f
-
20000
)]
3
3
5
5
Lab
1
Solutions
Page
2
26
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