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

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Sec. #] Limits 27<br />

209. lim<br />

210. lim<br />

_ K<br />

211. Hm(]/xfa |<br />

Jf--fCO<br />

The formula<br />

212. lim [/*(* + a)<br />

X-<br />

xj.<br />

213 ' -6* 4 6-*).<br />

^i<br />

214. li.<br />

215.<br />

llm -i<br />

X - X<br />

r frequently used when solv<strong>in</strong>g the follow<strong>in</strong>g examples.<br />

granted that lim s<strong>in</strong> * = s<strong>in</strong> a and lim cos *= cos a.<br />

Example 6.<br />

216. a) lim;<br />

217.<br />

218. lim<br />

X -0<br />

b)li.n^.<br />

X -> CO<br />

,. sill 3x<br />

s<strong>in</strong> 5*<br />

s<strong>in</strong> 2* '<br />

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

219. lim = .<br />

M ^ s<strong>in</strong> BJIJC<br />

l<br />

220. lim ( n s<strong>in</strong>-).<br />

n-*cc \ n I<br />

221. lim<br />

222. lim<br />

223. lim<br />

224. lim<br />

225. lim<br />

226. lim<br />

lira !!! lim<br />

crs^<br />

I tan*<br />

'<br />

227. a) lim xs<strong>in</strong>l;<br />

b) lim x s<strong>in</strong> .<br />

X-* *<br />

00<br />

228. lim (1 x) tan -~- .<br />

Jt-M<br />

^<br />

It is taken for<br />

229. lim cot 2x cot f-^ x).<br />

* -+0 \ * /<br />

230. lim<br />

*- Jt<br />

231. lim<br />

ji *<br />

1-2<br />

232. lim cosmx- cosn\<br />

V*<br />

*<br />

233. lim<br />

JC -<br />

236. lim<br />

tan A: sui<br />

arc s<strong>in</strong> ^<br />

s<strong>in</strong> six '

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