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
25y)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
420g(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;
QDCFMB
OAP2(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
25P(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
42yg(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.
215.֪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)
(li)ԴW(wng)j(lu) ؟(z)ăHތW(xu)(x)a(chn)(qun)(wn)}Ո(qng)(lin)ϵ҂r(sh)h