Probability and Stochastic Processes: A Friendly Introduction for Electrical and Computer Engineers [SOLUTIONS MANUAL 3ed.] [3ed] 1118324560, 9781118324561, 9781118804384, 1118804384

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Probability and Stochastic Processes: A Friendly Introduction for Electrical and Computer Engineers [SOLUTIONS MANUAL 3ed.] [3ed]
 1118324560, 9781118324561, 9781118804384, 1118804384

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(a) From the above PDF we can determine the value of c by integrating the PDF and setting it equal to 1, yielding Z 2 cx dx = 2c = 1. (2) 0

Therefore c = 1/2. R1 (b) P[0  X  1] = 0

x 2

dx = 1/4.

(c) P[ 1/2  X  1/2] =

R 1/2 0

x 2

dx = 1/16.

(d) The CDF of X is found by integrating the PDF from 0 to x. 8 > x < 0, Z x

0 : 1 x > 2.

(3)

Problem 4.3.2 Solution From the CDF, we can find the PDF by direct di↵erentiation. The CDF and corresponding PDF are 8 > x < 1,

: 1 x > 1, ( 1/2 1  x  1, fX (x) = (2) 0 otherwise.

Problem 4.3.3 Solution We find the PDF by taking the derivative of FU(u) on each piece that FU(u) is

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