3104442_18_Ch3-作业解答

3104442_18_Ch3-作业解答

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Ch_3 3-1 3-1êF@ êF t 1 3-1 1
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0 0, 2, 4, 1 2 1, 3, n n n F jb jE n n π = ± ± = - = - = ± ± L L 2 T
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3-4 3-4áÅ }+ t 2 3-4 h#w ½ ª*ð– ¹ª* 0 0 1 ( ) 2 T E a f t dt T = = 3-4 ( ) f t G 0 2 2 2 0 2 2 2 0 2 2 0 2 ( )cos( ) 2 ( )cos( ) 4 2 cos( ) 8 1 sin( ) sin( ) 8 cos 1 ( ) 2 0 4 ( ) T n T T T T T a f t n t dt T f t n t dt T E t n t dt T T E t n t n t dt T n E n T n T n E n n ϖ π - = = = = - = - = - g & 2 T = && 0 n b = 3
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0 1 2 1,3,5, 2 2 2 ( ) [ cos( ) sin( )] 4 ( )cos( ) 2 ( ) 4 1 1 [cos( ) cos(3 ) cos(5 ) ] 2 3 5 n n n n f t a a n t b n t E E n t n E E t t t ϖ π = = = + + = + - = - + + + L L …… 3-4-1 ;ˆ½ª * 3 3-4 t 3 3-4 @@ @ êF% ƒ~ ¹+ pêF f ( t ) E O 2 T T t t 4 3-4 4 p êF ïêF àêFP h– ¹ª*h– ¹ª* @ êFY 4
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g ( t ) E O 2 T - t 2 T F 5 3-4 a -40 -30 -20 -10 0 10 20 30 40 0 0.1 0.2 0.3 0.4 0.5 G(w) ( 6 & 3-4 b 5 2 | | (1 ), (| | ) 2 ( ) 0 , (| | ) 2 t T E t T g t T t - = |{ o ( ) g t { } 2 2 2 8 ( ) ( ) sin 2 4 4 a ET T E T G g t S T ϖ = = = F 6 3 ( ) ( ) ( ) ( ) 2 2 2 T T T f t g t g t g t = + + - + - Ξ Γ…♠ { } 0 0 ( ) ( ) j t f t t F e - - = F 5
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{ } 3 2 2 2 3 2 2 2 3 2 2 2 2 2 3 ( ) ( ) ( ) ( ) ( ) 2 2 2 ( ) ( ) ( ) ( ) 8 sin ( ) 4 T T T j j j T T T j j j T T T j j j T T T F f t g t g t g t G e G e G e G e e e E T e e e T ϖ - - - - - - = = + + - + - = + + = + + = + + F F 3 2 2 2 2 3 2 2 2 2 2 2 3 2 2 2 2 2 1 cos( ) 8 2 2 4 (1 ) 2 4 1 1 1 2 2 T T T j j j T T j j T T T j j j T T T j j j j T j T j T T
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This note was uploaded on 03/28/2011 for the course ELECTRICAL 30230104 taught by Professor Yongren during the Fall '11 term at Tsinghua University.

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3104442_18_Ch3-作业解答

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