f(x) φ(x). f(x) φ() , φ() f(). : φ() f(), ψ(), f()=φ()ψ(). φ() f(x) g(x), . , f(x) g(x) . , (f(x), g(x))=1. f(x) g(x) , .
, . f(x) g(x) d(x), . f(x) g(x) , d(x), (f(x), g(x)). , , , .
:
1. f(x) g(x)?
2. f(x) g(x)?
3. f(x) g(x)? ?
, . , .
. f(x) g(x), f()≥ g(x). f(x) g(x), r1(x). g(x) r1(x), r2(x). r1(x) r2(x). , . rk(x), rk-1(x), f(x) g(x).
, . , , , , , - , . , , , , .
1. f(x)=x3x25x3,
g(x)=x2+x12. f(x) g(x):
.
r1(x) 9 3. g(x) r1(x):
.
. , r1(x)=3 x3x25x3 x2+x12.
2. f(x)=3x3+2x24x1,
g(x)=5x33x2+2x4. f(x) 5 5f(x) g(x):
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r1(x) 19226+7. g(x) , g(x) 19:
19 :
1955 r2(x)=-1. r1(x) r2(x):
.
, , r2(x)=-1 f(x) g(x).
3. f(x)=3x3x2+2x4,
g(x)=x32x2+1.
. .
.
: (f(x), g(x))=1.
, f(x) g(x) , , , .
f(x), g(x) d(x) , .
d(x) f(x) g(x), u(x) v(x), f(x)u(x)+g(x)v(x)=d(x). , f(x) g(x) , u(x) g(x), v(x) f(x).
, u(x) v(x) f(x) g(x).
4. u(x) v(x) , f(x)u(x)+g(x)v(x)=d(x),
A) f(x)=4-33+1, g(x)=3-32+1;
B) f(x)=4-3+32-5+2, g(x)=3+-2.
. f(x) g(x), , , 1, 2, 3.
(1) (2)
(3)
, f(x) g(x) 1.
:
f(x)=g(x)+(+1) (1*)
g(x)=(+1)(2+2+2)1. (2*)
(2*) d(x)= 1=g(x)(x+1)(x2+2x+2). (1*) +1=f(x)g(x) (2*): d(x)= 1=g(x)(f(x)g(x))(x2+2x+2).
f(x) g(x):
d(x)= 1=g(x)f(x)(x2+2x+2)+g(x)x(x2+2x+2)=f(x)(x22x2)+g(x)(1x3 +2x2+2x)=f(x)(x22x2)+g(x)(x3+2x2+2x+1).
, u(x)=x22x2, v(x)= x3+2x2+2x+1.
f(x) g(x) 2-2. , (1) (2):
:
1
1. :
) 423246, 2453+8210+8.
) (1)3(+2)2(2+3), (1)4(+2).
2. u(x) v(x) , f(x)u(x)+g(x)v(x)=d(x), d(x)=(f(x), g(x)),
f(x)=6-45+114-273+372-35+35,
g(x)=5-34+73-202+10-25.
2
1. :
) 4-33-32+11-6, 453+62+-3.
) (2+3)3(-2)2(+1) .
2. u(x) v(x) , f(x)u(x)+g(x)v(x)=d(x), d(x)=(f(x),g(x)),
f(x)=37+66-35+44+143-62-4+4, g(x)=36-34+73-6+2.
3
1. :
) 24+3+42-4-3, 44-63-42+2+1.
) (+1)2(2+4)3(+5)5, (-2)2(+2)4(-1).
2. u(x) v(x) , f(x)u(x)+g(x)v(x)=d(x), d(x)=(f(x), g(x)),
f(x)=33-22+2+2, g(x)=2-+1.
4
1. :
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) 34-83+72-5+2, 34-23-32+17-10.
) (+7)2(-3)3(2+1) .
2. u(x) v(x) , f(x)u(x)+g(x)v(x)=d(x), d(x)=(f(x), g(x)),
f(x)=4-3-42+4+1, g(x)=2--1.
5
1. :
) 24-33-2+3-1, 4+3--1.
) 4(-1)2(+1)3, 3(-1)3(+3).
2. u(x) v(x) , f(x)u(x)+g(x)v(x)=d(x), d(x)=(f(x), g(x)),
f(x)=35+54-163-62-5-6, g(x)=34-43-2--2.
6
1. :
) 4-23+42-2+3, 4+53+82+5+7.
) 3(+1)2(-1) .
2. u(x) v(x) , f(x)u(x)+g(x)v(x)=d(x), d(x)=(f(x), g(x)),
f(x)=5-54-23+122-2+12, g(x)=3-52-3+17.
7
1. :
) 4+33-32+3-4, 4+53+52+5+4.
) (2+1)(-8)(+1), (3+1)(-1)23.
2. u(x) v(x) , f(x)u(x)+g(x)v(x)=d(x), d(x)=(f(x), g(x)),
f(x)=44-23-162+5+9, g(x)=23-2-5+4.
8
1. :
) 4-33-22+4+6, 24-63+22-7+3.
) (3-1)(2-1)(2+1), (3+1)(-1)(2+2).
2. u(x) v(x) , f(x)u(x)+g(x)v(x)=d(x), d(x)=(f(x), g(x)),
f(x)=24+33-325+2, g(x)=23+2--1.
9
1. :
) 24+3-52+3+2, 34+83+32-3-2.
) (3+1)(+1)2(2+3) .
2. u(x) v(x) , f(x)u(x)+g(x)v(x)=d(x), d(x)=(f(x), g(x)),
f(x)=34-53+422+1, g(x)=33-22+-1.
10
1. :
) 4-53+72-3+2, 24-3-72+3-2.
) (+1)(2-1)(3+1), (3-1)(2+).
2. u(x) v(x) , f(x)u(x)+g(x)v(x)=d(x), d(x)=(f(x), g(x)),
f(x)=5+54+93+72+5+3, g(x)=4+23+22++1.
11
1. :
) 24-33+102-9+12, 34+3+102+3+3.
) (3-8)(3+1)(+1), (-2)2(+3).
2. u(x) v(x) , f(x)u(x)+g(x)v(x)=d(x), d(x)=(f(x), g(x)), f(x)=4+1, g(x)=3+.
12
1. :
) 24-3-22-2-1, 24-3-52-4-2.
) (+1)3(2-1)2 .
2. u(x) v(x) , f(x)u(x)+g(x)v(x)=d(x), d(x)=(f(x), g(x)), f(x)=4-2+-1, g(x)=3-1.
13
1. :
) 4-23+22-1, 34-53+32+-2.
) (3-1)(-1)323 .
2. u(x) v(x) , f(x)u(x)+g(x)v(x)=d(x), d(x)=(f(x), g(x)), f(x)=4-3-2-1, g(x)=3+1.