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# Errata - Corrections to Introduction to Signals and Systems...

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DKL: 8/22/03 Corrections 1 Corrections to Introduction to Signals and Systems by Douglas K Lindner Please send additional corrections to the author at: [email protected] Chapter 2 1. Page 22, Remark 2.1.5(d): Subscript on x t o ( ) should be "o" not "0". 2. Page 24, Equation (2.2.3): First limit of integration should carry a negative sign, f t t t dt ( ) ( ) d - -• Ú 0 3. Page 29, Definition 2.3.2: last line should read f n n n n n ( ) , . = < < 0 0 1 for all and 4. Page 32, Problem 2.1.5, should read " .... Remark 2.1.5." 5. Page 32, Problem 2.1.4: Parts (b) and (c) should read (b) Show that the following signal is odd x t x t x t e ( ) ( ) ( ) = - - 2 (c) Show that x t x t x t e o ( ) ( ) ( ) = + 6. Page 34, Problem 2.3.5(ii), should read (ii) sin ( ) sin( ) 2 0 0 p - ( ) = W W n n Chapter 3 1. Page 46, Figure 3.2.2: Caption should read "Roots of a Second-Order Polynomial" 2. Page 52, Problem 3.2.7: Part (b) should read a s s a jb s a jb ( ) ( )( ) = - + - - Chapter 4 1. Page 61, Definition 4.2.2: should read " Let r v π 0 be a ... " Chapter 5

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DKL: 8/22/03 Corrections 2 1. Page 71, first line of second paragraph: should read " ... voltage and at time t = 5 we ... " 2. Page 72, Example 5.1.6: first line of second paragraph should read " ... to the mass by a hammer. Clearly ... " 3. Page 77, Example 5.2.3: ..... Definition 2.2.5 4. Page 101, Problem 5.3.3(viii): The signal in Part (viii) should read x t t k k k ( ) ( ) ( ) = - - =- Â 1 2 2 2 L 5. Page 103, Problem 5.4.3: The second message sequence should read ˜ . . . b b b b = { } = { } 1 2 3 0 1 0 6 0 4 Chapter 7 1. Page 139, Equation(7.1.13), should have a (-2) on second line: b T x t m t dt T m t dt dt T m m m m T = = - È Î Í Í ˘ ˚ ˙ ˙ = - Ê Ë ˆ ¯ - - Ê Ë ˆ ¯ È Î Í ˘ ˚ ˙ = Ú Ú Ú - 2 2 0 2 2 2 0 0 0 0 0 0 0 0 0 0 1 2 1 2 1 2 3 2 ( )sin( ) sin( ) cos cos . w w w w w (7.1.13) 2. Page 144, Equation (7.2.5) should read b a A A m m m m m m m = - = - sin cos tan .
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