1 1. x 1 (1) x 2 + 2x + 5 dx d dx (x2 + 2x + 5) = 2(x + 1) x 1 x 2 + 2x + 5 = x + 1 x 2 + 2x x 2 + 2x + 5 y = x 2 + 2x + 5 dy = 2(x + 1)dx x + 1

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1 . ( d ( ( y dy ( + + dy y log y + C log( C. ++5 (+ +4 y (+/ (y + 4 4(y + dy dy Arctany+C Arctan + y ( + +C ( + log( Arctan + C. ( sin sin cos + cos cos + sin + C. ( log C.

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3 (8 sin cos 4 I k 3 cos k I k sin cos k + (k sin cos k sin cos k + (k ( cos cos k sin cos k + (k (I k I k k sin cosk + k k I k. sin cos 4 I I 3 sin cos 4 6 sin cos5 + 6 I 6 sin cos sin cos I. + cos I sin cos + + C + sin 4 + C 6 sin cos5 + 4 sin cos3 +frac6 sin cos C. (9 sin 3 cos 4 cos t sin t sin dt sin 3 cos 4 ( 4 dt cos7 cos5 + C. 7 5

4 4 ( sin cos 3 sin cos 3 (sin 5 sin sin cos 3 ( cos 5 cos + C. 5 ( t dt ( ( 4 /3 ( dt t log + C. t ( 4 /3 t 3 4 t t dt ( 4 /3 (t t 3t dt (3t 6 + t 3 dt ( ( 47/ ( 4 4/3 + C. t t t( ( , t( + 3 t. + 3 t t, t + dt. t t ( + 3 t + t

5 t dt log t +C log C. ( ( (3 + ( ( (3 + ( 3 a + b c 3 a(3 + ( 3 + b( ( 3 + c( (3 + (3a + b + 6c + ( 7a 7b + c + ( 6a + 3b c 3a + b + 6c 7, 7a 7b + c, 6a + 3b c 3. a, b, c ( (3 + ( 3 ( log 7 log log 3 + C a b a( + b( + 4 (a + b + 4b a a + b, 4b a a 3, b log +4 log +C.

6 (6 3 8 ( + 3( ( + 3( ( + 3( a + 3 b + c (a + b + (3b + c 4a + 5a + 3c a + b 7, 4a + 3b + c 7, 5a + 3c 6. a 5, b 4, c ( log ( + dt (t, dt + t Arctan( + C log + 3 ( + 3( log Arctan( + C. 3 (7 e e e e e e + C. (8 sin sin cos cos + sin cos + +C. 4

7 7 (9 3 log 3 log log 4 ( Arctan 4 4 Arctan Arctan ( cos sin log C. + Arctan + Arctan + C. cos sin ( 3 cos3 cos sin cos 3 3 cos cos 3 ( sin cos cos 3 sin 3 sin3 + C. cos sin cos3 + sin 3 3 ( sin3 9 + C. y y 4, 3 dy (y 4 y dy 3 ( 3 5 y5/ 8 3 y3/ + C ( ( ( C.

8 8. ( ( [ ] + Arctan π + π 4 π 4. π ( cos 4 π cos 4 [ sin cos 3 ] π + 3 π π π (cos cos cos 3π 8. cos sin π cos (3 4 log 4 [ log log ] 4 4 [ 8 log 4 4 ] 4 8 log (4 (5 8 π/3 /3 cos 8 /3 [ ] / y / dy y [, π/6] π/3 cos π/6 cos ydy.

9 9 4 ( ( ( + 3( [ ] log (log log 5 4 log 5 7. (7 Arctan (8 e Arctan [Arctan] + log (9 ( 3 e ( /3 3 ( /3 π 4 [ log( + ] e log [ log ] e. ( /3 t /3 dt 3 /3. t dt ( /3 t /3 dt [ ] 3 4 t/ π 4 log.

10 ( 3 9, t 9 dt t ( ( N N [ ] N N N / N log e log < e log e N log e log e e N e e e N e. (3 N log log t et 3 dt, dt, et dt

11 N 3 log log N log 3 t e t et dt log N log 3 (4 3 log N 3 N log 3 log N log 3. [ ] N N. N log N 3 4. (a n [ cos cos 4 cos n ] cos k n n n n cos n n + cos cos 4 cos n cos n k k n+ (k n cos n+

12 (k cos cos n n+ [ ( (k cos + [ n cos (4k n+ + cos n+ ( (k + cos ] n ] n+ (4k 3 n+ k k n n n cos n k n cos n k (k n cos (k n+. n+ (b n [, ] n f(t cos t cos t t lim n n n k cos (k n+ (c cos t dt. lim cos n cos 4 cos sin n [ sin t cos t dt ] t t sin lim n cos cos 4 cos n sin.

13 3 (d π + (Viète f( n f (n+ ( f(f n ( f n ( f(f( f(. }{{} n cos π n+ + cos π n cos cos +. f (cos π ( f (n cos π. n 4 (c 5. f( Laplace Lf(s f(e s Laplace (a α > α Laplace Γ(α + /s α+ s > α > α e (, L( α e s α. s > v s dv s L( α v α s α e v s dv Γ(α + s α.

14 4 (b f( e α Laplace /(s α s > α L(e α e s+α s > α e (s α. e (s α s α lim [ ] e (s α N N s α (c f( sin(α Laplace α/(s + α s > s > N e s sin α [ ] N s e s sin α + α N e s cos α s s e sn sin αn α s [ e s cos α ] N + α s N α s e s sin α [ s e sn sin αn + α s α s e sn cos αn N e s sin α α α + s. (d f( cos(α Laplace s ].

15 5 N e s cos α [ ] N s e s cos α α N e s sin α s s ( e sn cos αn + α s [ e s sin α ] N N α s e s cos α s s + α ( e sn cos αn α s e sn sin αn. s s +α s > s (N kπ, kπ + π, k

16 6 6. a > f(, ydy ( (a f(, y dy (b f(, ydy {(, y ;, y } (, y y y y y. ( f(, ydy f(, y dy. ( f(, y dy f(, ydy {(, y;, y } (, y y y y y y y y y

17 7 (c π 4 ( a cos θ f(, ydy f(r, θ dr dθ ( y f(, y f(r, θdrdθ { (r, θ; θ π 4, r a } cos θ dy. (r, θ a a a r r cos θ r a r a/ cos θ θ π/4 a r a r θ θ π a cos θ > r 4 cos θ cos θ a r, θ Arccosa r. (d a f(r, θdrdθ ( π/4 f(r, θdθ dr + ( F (, ydy a F (, ydy a ( π/4 f(r, θdθ dr. Arccos(a/r { (, y;, y }. y y y, y y y

18 8 { (, y ; y, y y }. (e ( 6 y y F (, ydy F (, y dy ( y F (, y dy. y F (, ydy { (, y ; y, y 6 y } y 6 y y y 6 y y 6 y 6, y min{, 6, } 6 (3 + ( 4 6 min{, 6, } min{, 6, } 6. F (, ydy ( 4 F (, ydy + 6 ( 6 4 F (, ydy.

19 9 (f ( 3y F (, y dy F (, ydy y { (, y ; y, y } 3y y y 6 y 3y y 3y, y 3 y y (, y y 3 6 y 3 F (, ydy ( 6 ( F (, ydy + F (, y dy. /3 7. (a ( ye y dy { +y, y 3} /3 u + y, v y (u + v/, y (u v/ (, y (u, v (b ( ue v dudv { u, v 3} 3 ( udu zdydz { +y +z, z } e v dv 4 (e3.

20 r cos θ, y r sin θ, z z r, θ, z z + r, z, θ π (, y, z (r, θ, z cos θ r sin θ sin θ r cos θ r zrdrdθdz {z +r, z, θ π} 4π zrdzdr. {z +r, z } (c (d z ρ cos ϕ, r ρ sin ϕ π ϕ π, ρ 4π zrdzdr 4π {z +r, r,z } π π/ π/ ρ 3 cos ϕ sin ϕdρdϕ sin ϕ dϕ π. (3 y dy, {, y } ( (3 ydy ( ( + y dy, {, y }

21 (e ( ( + ydy [y + y ( ] ye y3 dy {, y } (f ( ye y3 dy {, y } { y, y} ( y y e y3 dy ye y3 dy ye y3 dy ye y3 dy y dy {, y, + y 4} [ ] 3 ey3 e 3. r cos θ, y r sin θ {(r, θ ; r, θ π} r π/ ( y dy r 3 sin θdr dθ {,y, +y 4} 4 4 π/ cos θ dθ [ θ sin θ 4 ] π/ π.

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24 4 r, { (r θ ; r a cos θ, π θ π } 4 ar cos θ 4 ady {, +y a} π/ ( a cos θ 4 4 8a3 5 π/ π/ π/ 3a a3 cos 3 θdθ r 3/ a cos θdr dθ ( t dt (t sin θ

(1) D = [0, 1] [1, 2], (2x y)dxdy = D = = (2) D = [1, 2] [2, 3], (x 2 y + y 2 )dxdy = D = = (3) D = [0, 1] [ 1, 2], 1 {

(1) D = [0, 1] [1, 2], (2x y)dxdy = D = = (2) D = [1, 2] [2, 3], (x 2 y + y 2 )dxdy = D = = (3) D = [0, 1] [ 1, 2], 1 { 7 4.., ], ], ydy, ], 3], y + y dy 3, ], ], + y + ydy 4, ], ], y ydy ydy y y ] 3 3 ] 3 y + y dy y + 3 y3 5 + 9 3 ] 3 + y + ydy 5 6 3 + 9 ] 3 73 6 y + y + y ] 3 + 3 + 3 3 + 3 + 3 ] 4 y y dy y ] 3 y3 83 3

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