608 ANSWERS
5 1l'
u. s ·
13. 3.,,
8.
Section 8.3. Improper Integrals of Rational Functions: page 310
o.
5.^7 TS1f ·
7. ~·
9. ~-
2w 3•
13.^2 ;.
1 5. ~·
Section 8.4. Improper Integrals Involving Trigonometric Functions:
page 315
l. Joo - oo cos :z:•xdx +9 - ~ " an d Joo - oo sin x•+9 xdx - (^0).
3. w· 7f
- "(l 5 ~-:w. l)
7. 2er"cos! ·
- ·1f z.-sit1 l
- ----..--"cos2.
13. The inequality II. CR exp(iQ(z) z)P(z)dz I < - ~ " Jo t "^12 e-^2 R0/1r RdB < e in Jordan's
lemma would not be possible to get if we replaced exp (iz) by either the
complex sine or cosine. Explain why.
Section 8.5. Indented Contour Integrals: page 321
- :13·