Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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62.
SE SECTION 7.2
Trigonometric Integrals
499
61. If " tan°x sec x dx = I, express the value ofvon9
aluate
* tanx secx dx in terms of I.
=b Zn 200 X 2
62. (a) Prove the reduction formula
cos 0 d0 and
9 sin-0
w niz
tan"-2x dx
tan2n-1
| tan2"x dx
2n – 1
Substitution Rule
(b) Use this formula to find tan°x dx.
xb xN 200 X 200
v 63. Find the average value of the function f(x) = sin²x cos'x
on the interval [-Ħ, 7].
- IT,
64. Evaluate sin x cos x dx by four methods:
(a) the substitution u = cos x
the substitution u = sin x
tutisedu2
(c) the identity sin 2x = 2 sin x cos x
10 olonio so d) integration by parts
5Tw Ingoini on
11ebnei- 65-66 Find the area of the region bounded by the given curves.
Explain the different appearances of the answers.
This can
sin-x, y = sin'x, 0<x< T
cot 0 in
y = tan²x, 0 <x< /4
65. y =
66. y = tan x,
md the hypotenus
th 67-68 Use a graph of the integrand to guess the value of theas
2 ol no9wi integral. Then use the methods of this section to prove that your
2 or bae (d guess is correct. nut B
2
aduan slem 67. cos'x dx
68.
sin 27x cos 5Tx dx
Jo
hnbsnd-01so A 3BA SHO O COLU IS vatid even
69-72 Find the yolume obtained by rotating the region bounded
Transcribed Image Text:SE SECTION 7.2 Trigonometric Integrals 499 61. If " tan°x sec x dx = I, express the value ofvon9 aluate * tanx secx dx in terms of I. =b Zn 200 X 2 62. (a) Prove the reduction formula cos 0 d0 and 9 sin-0 w niz tan"-2x dx tan2n-1 | tan2"x dx 2n – 1 Substitution Rule (b) Use this formula to find tan°x dx. xb xN 200 X 200 v 63. Find the average value of the function f(x) = sin²x cos'x on the interval [-Ħ, 7]. - IT, 64. Evaluate sin x cos x dx by four methods: (a) the substitution u = cos x the substitution u = sin x tutisedu2 (c) the identity sin 2x = 2 sin x cos x 10 olonio so d) integration by parts 5Tw Ingoini on 11ebnei- 65-66 Find the area of the region bounded by the given curves. Explain the different appearances of the answers. This can sin-x, y = sin'x, 0<x< T cot 0 in y = tan²x, 0 <x< /4 65. y = 66. y = tan x, md the hypotenus th 67-68 Use a graph of the integrand to guess the value of theas 2 ol no9wi integral. Then use the methods of this section to prove that your 2 or bae (d guess is correct. nut B 2 aduan slem 67. cos'x dx 68. sin 27x cos 5Tx dx Jo hnbsnd-01so A 3BA SHO O COLU IS vatid even 69-72 Find the yolume obtained by rotating the region bounded
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