.. Sina-
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- .
, .
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( 1) .
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, .
, ..
1. ( sina=0), .
2. Cosb=0, <=90*, , , .
, - , .
, ,
:
, , .
N |
.
: - .
:d= .,
d= .. , .
:
3. ( ) D111D1 1 1
4. ( ) D D- . , , , :D=3:1.D=4, ==5, =6
:
1. 2--3z+5=0 +-2=0.
2. :
a. (2,1,-1) (1,-2,3)
b. (3.-1,2) , (4,-2,-1)
3. (2,3,-1),(1.-1,3),(1,9,-11)
4. (1,0,1),(-2,2,1),(2,0,3). .
5. (1,0,1),(-2,2,1),(2,0,3) D(0,4,-2). D.
6. (1,0,1),(-2,2,1),(2,0,3) D(0,4,-2). D .
7. (1,2.3), (9,6.4), D(3,0,4) 1(5,2,6).
a.
b. 1 ()
1. D111D1, 11 DD1. D , 4.
2. D111D1 , 1,D - 111D1.
3. 111 1=1,=1,M N 11( ) 11( ). MN 11
|
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4. SD, 1, SD.
5. S 6, . , S .
6. SAF 2, 1. SAF
:
1. (-3,0,1) (2,1,-1),(-2,2,0) D(1,3,2)
:
.
D.
D .
7. D111D1, 1, D1. D1 , 6.
. .
D111D1, D=4, =2, 1=6. , D:D1=1:5, - 11.
. . (0,0,0),D(4,0,0), (4,0,1),(2,2,6) (,,z), ,
=t