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The known errors in the textbook are listed below. Please report any new errors in the textbook or in the solutions manual to Bonnie Heck at bonnie.heck@ece.gatech.edu.
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Figure 1.29: the car figure does not belong; only the y(t) vs Time plot should be there. |
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Problem 1.7 (c): the second cos(t) should be labeled sin(t) |
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Problem 1.14(c) graph should indicate that x(t) = 0 for t< 0. |
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Problem 1.24: Rather than say "y(t) is the zero-state response to x(t)", the problem statement should say "y(t) is the response of the system to x(t). Assume that the system is initially at rest." Part (a) should be modified to read y(t)=x(t)+1 if x(t) not equal to zero, otherwise, y(t) = 0. |
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Problem 2(e): x(t) = u(t) not x(0) = u(t), also, an error exists in the solutions manual |
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Problem 2.34 (c) use the values of T = 0.1, T = 0.5 and T = 1 sec for the three cases. Simulate for 80 seconds. Part (e) Use T = 0.1 sec and simulate for 100 seconds. |
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Problem 3.1 (e) should read y[n+2]+1/4y[n+1]-3/8y[n] = 2x[n+2]-3x[n]. |
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Problem 3.14 (d) is a duplication of part (a). |
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Problem 3.23: the figure referenced should be Figure P3.23. |
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Figure 4.5: the axis for |c_k| should be labeled 0.25 and 0.5 not 25 and 5. |
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Subscript for c in the equation should be a "k" not an "n" |
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Problem 4.22(b): Should be x(t)=t*exp(-t)*u(t) not x(t) = t*exp(-1)*u(t) |
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Equation (5.40) should have a dw (omega) not a dt |
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Problem 6.10: Plot magnitude only. Part (d)
should have  instead of p in denominator of argument. Lastly,
this problem should have been 6.1 (that is, the material is the
most basic in the chapter so it should have been the first problem). |
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Problem 7.6: Use either the definition of the inverse DTFT or the properties to solve. In part (b): The curve on the left should be shifted to the right by pi/3, and the curve on the right should be shifted to the left by pi/3. The function should be periodic with period 2*pi. |
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Problem 7.9(b): missing an "=" , should read x[1] = 0 |
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Figure 9.9: delta = 0 and delta = 1 in figure should be zeta = 0 and zeta = 1 |
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The corner frequency is off by approximately
3 dB, not exactly 3dB. It should be exactly off by 20 log10(sqrt(2)) |
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The first sentence on the page might be better stated "... such that z is not equal 0." |
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Equation (11.59): k should be replaced by n inside the integral, so it should be z^(n-1) |
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The table entry u[n]+u[n-q] should be the pulse, u[n]-u[n-q] |
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Example 11.15, Inverse z-Transform via Long Division: z^3 + 2 + 4z^-1 should be z^2 + 2 + 4z^-1 under the z^2 - 1 line. |