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(dng)ǰλãزĎ(k) > ز > ز > Ǻ(sh)ԇ}w{(3)

Ǻ(sh)ԇ}w{(3)

W(wng)վزĎ(k)|r(sh)g2019-05-29 15:35:41|Ƅ(dng)ˣǺ(sh)ԇ}w{(3)

Ǻ(sh)ԇ}w{(3)

201*ö݆(f)(x)Ǻ(sh)}3

2sin21

1.[201*̩ĩ]֪tan2tsin2()

513A.3B.41313C.5D.4

2.Ѻ(sh)ysinx(xR)ĈDеc(din)ƽ6(g)λL(zhng)ٰÈDc(din)ęM(bio)L(zhng)ԭ(li)2(v(bio)׃)õĈDʾĺ(sh)()

Aysin2x3xR

1

Bysin2x6xR

Cysin2x3xR

1Dysin2x6xR

3.(sh)f(x)2cos2x3sin2x(xR)Сںֵքe()

A23B2У1C3DУ1

4.(sh)ycos(x)(أ0,0գ)溯(sh)ԓ(sh)IJֈDDʾABքec(din)cc(din)҃c(din)gľx22tԓ(sh)һl(du)QS̞()

2

AxBx

2

Cx1Dx2

5.ڡABCABC(du)߅քeabcAáB12ab13tcos2Bֵ()

1133A2B.2C2D.2

6.ڡABCABC(du)߅քeabcSʾABCe

122

acosBbcosAcsinCS4(bca2)tB()

A90B60C45D30

7.[201*]֪Ǧȵc(din)(bio)ԭc(din)ʼ߅xSSP(4

25

y)ǽǦȽK߅һc(din)sinȣ5ty________.

3

8.֪ʦ2tan2tcos________.

33

9.cos5Ҧʦ2ttan________.

10.[201*ؑc]O(sh)(sh)f(x)sinxcosx3cos(x)cosx(xR)

(1)f(x)С

3

(2)(sh)yf(x)ĈDbƽƺõ(sh)yg(x)ĈDy

42

0g(x)ϵֵ4

11..

O(sh)

e.

12.֪x,sinxcosx,ֵ

2475sinxcosx

3sin2xxxxcos24sincos2222.tan(x)

13.K15ڡABCУABC(du)(yng)߅a,b,c

1sin(A)2cosA,Aֵ

612cosA,b3csinCֵ.

314.

DʾijQO|R·߅ε(ni)һ(g)D^.˳@K]c߅h(hun)f(xi){(dio)O(sh)Ӌ(j)ҪԓD^εĂ(g)c(din)Ҫ߅D^Ҫ.O(sh)εİ돽OMRMOP45OBcOM֮gĊAǞ

.

񣩌D^ABCDeSʾɵĺ(sh).

R45m(dng)ֵr(sh)ABCDeSֵֵǶ(_0.01m2)

15֪(sh)f(x)cos(2x)2sin(x)sin(x)

3441󺯔(sh)f(x)Сں͈DČ(du)QS;

QD

CFMB

OAP

2󺯔(sh)f(x)څ^(q)g[0,]ϵֵ.

2

(bio)YԴW(wng)]

U(ku)չxǺ(sh)ԇ}w{(2)

Ǻ(sh)ԇ}w{2

2sin21

1.[201*̩ĩ]֪tan2tsin2()

513A.3B.41313C.5D.4

22.֪sintcos(2a)

3A.1155B.C.D.93931ֵ2cossin21052A.B.C.D.23333.3sincos0,t4.A

(,)2

sin24sin()cos()425ô

2222225B5C5D5

5.Ѻ(sh)ysinx(xR)ĈDеc(din)ƽ6(g)λL(zhng)ٰÈDc(din)ęM(bio)L(zhng)ԭ(li)2(v(bio)׃)õĈDʾĺ(sh)()

Aysin2x3xR

1

Bysin2x6xR

Cysin2x3xR

1Dysin2x6xR

6.(sh)f(x)2cos2x3sin2x(xR)Сںֵքe()

A23B2У1C3D1

7.(sh)ycos(x)(أ0,0գ)溯(sh)ԓ(sh)IJֈDDʾABքec(din)cc(din)҃c(din)gľx22tԓ(sh)һl(du)QS̞()

2

AxBx2

Cx1Dx2

8.[201*]֪Ǧȵc(din)(bio)ԭc(din)ʼ߅xSS

25

P(4y)ǽǦȽK߅һc(din)sinȣ5ty________.

3

9.֪ʦУ2tan2tcos________.

33У10.cos5Ҧttan________.2

11.[201*ؑc]O(sh)(sh)f(x)sinxcosx3cos(x)cosx(xR)

(1)f(x)С

3

(2)(sh)yf(x)ĈDbƽƺõ(sh)yg(x)ĈD

42

yg(x)04ϵֵ

12.֪x,sinxcosx,ֵ

2475sinxcosx

3sin2xxxxcos24sincos2222.tan(x)

13.K15ڡABCABC(du)(yng)߅a,b,c1sin(A

6)2cosA,Aֵ

14֪(sh)f(x)cos(2x)2sin(x)sin(x)

3441󺯔(sh)f(x)Сں͈DČ(du)QS;

2󺯔(sh)f(x)څ^(q)g[0,]ϵֵ.

2

15.֪sinacosa353,a(0,4),sin(),(,)54542(1)sin2atan2aֵ(2)cos(2)ֵ.16.֪f(x)=

12

ֵ

,Ү(dng)r(sh)ֵ

ֵ

xxxx17.֪a(sin,3cos),b(cos,cos)O(sh)f(x)ab.

2222󺯔(sh)f(x)[0,2]ϵc(din)

(bio)YԴW(wng)]

18.15

֪(sh)f(x)tan(2x),

4f(x)ĶxcС

IIO(sh)f()2cos2,Ĵ0,

ʾP(gun)ڡǺ(sh)ԇ}w{(3)oķHչ˼SʹãǺ(sh)ԇ}w{(3)ԓƪ½h(chung)

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