# hw7 - BB 224, HW 7, due March 25. 1. For the waveform 95(t)...

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Unformatted text preview: BB 224, HW 7, due March 25. 1. For the waveform 95(t) plotted below, 35(1) _ evaluate and draw the function t y(t) = / 13(7) d7: 0 The impulses are negative, and have strength 1. This is one of the waveforms in a video display. What is it used for? 2. Evaluate these integrals: (a) ﬁg 113(t + 2) 6(t + 1) dt, (b) fig? (BMW ~ T) dt, (0) If? W) W — 1) + 5(t + 1)] dt, (d) for em (50: — T) 6(t — 2) dt, (e) Ii? 6(7) 6(t — TW- where a:(t) satisﬁes the needed continuity conditions. EE 224., HW 7, due March 25. ‘ . z ’ ' I 2 (3:) Assume that the independent variable t is measured in seconds Given the identity [>0 me) at ~ to) dt = we) 00 Where the function 33(25) is measured in, say, volts (V), What would be the units of the shifted impulse 6(25 ~ to)? It is an interesting fact that the impulse 6(t) has a physical unit associated With it but it has no numerical value; only integrals of the impulse have a numerical value.- § v. :m“..1..,\ /--\ :L‘ "I : -.- . 1 1" ’m “u‘ _ t 3 J an unpumc (Hz/1;; 11 IL is a DOSIBIOH variable lilUdSLleﬂd in iiieﬁerS What would be the units of a charge distribution speciﬁed as q 6(zc —~ 4) if q is measured in coulombs (C)? Here, you should give the units of the product (16(56 —— 4). 4. Problem P—9.3 on p. 279 of the textbook. Do only parts (b)—(d). 5. Problem P—9.4 on p. 279 of the textbook. Do only parts (a)—(c). 6. Problem P—9.6 on p. 280 of the textbook. Do only parts (a)—(c). 7. Problem P—9.7 on p. 280 of the textbook. 8. Problem P-9.12 on p. 281 of the textbook. v ff‘xg’y“ Ly! 1%! {f S C02 fI/V 4U WW V ' (7/5.» <_/ V Wm 55: : MSW—2) :* W)» A- If pg) ) JEWTA: J Jﬁc-g _./9° a v w (.90 / rm Cm Ce») [319% Wij {a 51ng 4%; f {Eggmf} x(:) + KEV/U“. 5&1? " i- t? 1; if; gr‘ww? if ‘wm 2’: Cw ( w 0W 0%} ~16 Cwﬂwzré) gmégwmﬂ ea) i ~+t .f .t”.I\. l \aﬂvsa , 5 ax. } w/(gﬁm)aaﬁw MMWL 2 v "(Wm (w) 655%: k W I.L 5/ r) w‘ﬂwg : _!! [ékg M (E. A%_Méip A Q ‘7' #9 jmﬁw‘fﬂ @ 6 55Lan W M -_>({- i, ) Luv I f 6 Ga ) X (/avi/j O ...
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## hw7 - BB 224, HW 7, due March 25. 1. For the waveform 95(t)...

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