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Problems in Mathematical Analysis.pdf - pwp.net.ipl.pt

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448_Answers_<br />

r 4 **/*<br />

[ rj-cos*(p-- rrs<strong>in</strong> 2<br />

cp whence the lower limit for r will be and<br />

J,<br />

4ht upper limit, r=<br />

y rr cos2<br />

2<br />

s<strong>in</strong><br />

cp T^<br />

follows that p- cos 2<br />

q> . S<strong>in</strong>ce r must be real, it<br />

q> p- s<strong>in</strong>2<br />

cp ^2 0; whence for the first quadrantal angle<br />

ak<br />

we have fan _<br />

i Vy 2 Vy aVa*~x*<br />

1175. a) 4-g-; ^dy j dx + ^dy j dx\ b) ^-^- ;<br />

~<br />

^dx * ^<br />

. a) -; b) 2 + ~ a*- 2177 - - 2l78 - flZ - 2179 - w Hlnt -<br />

2180. T5. 2181. a-- +-. 2182. -<br />

1<br />

2183. . 2184. 6. 2185. lOjt. H<strong>in</strong>t.<br />

jJia<br />

Change the variables x2y = u,<br />

2188. 1(6 a)(p a). 2187. I(R a)ln-.<br />

o o d<br />

IX<br />

1188. u=di/(l-^^=:C^r(l-x)dy. 2193. ^. 2194. ~. 2195. ~- .<br />

,.96. *. 2197. J. 2,98.<br />

dy.<br />

4A. .19..^. 2200.^. 220,.^.<br />

2202. iia'(a P). 2203. ~^ (2 ^"2"~ 1)- 2204. -i '<br />

2205. ^. 2206.<br />

o O<br />

nafrc. 2207.<br />

|-<br />

( V "2 1).<br />

2^' (6 yT 5). 2208. ^a 3 .<br />

2209. IB (!--). 2210. . 2211. 3<br />

J~ 2 . 2212. (2<br />

L KT-1).<br />

ft L<br />

H<strong>in</strong>t. Change the variables = xt/ u, ~=f. 2213. ~- 2 2<br />

/"a 6 + 6 2 c 2<br />

+ c2a 2<br />

2214. 4(m ft)/? 1 . 2215. -~ a 2 . H<strong>in</strong>t. Integrate <strong>in</strong> the j/z-plane. 2216. 4 2 .<br />

2217. 8aarcstn . 2218. -1^(3 /"T 1). 2219. 8a 2 . 2220. 3na 2 . H<strong>in</strong>t.<br />

Q o<br />

2 Paas to polar coord<strong>in</strong>ates. 2221. o = \( 1+5LV 1<br />

|-jw<br />

I H<strong>in</strong>t. Pass to

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