: , , , 5.3, . : F= 20, m= 40∙, q=100/, [σ] = 160 .
:
1. ;
2. Q ;
3. .
:
( 5.3, )
, D, XA, YA YD.
.
, , () , .
:
, YD =108; YA≈212 ; XA=0.
. , , Y:
, .
Q ( 5.3, ).
1) .
, F, q. , , . ( , , LD L D):
I AB: 0≤ x1≤ 3, (x1A=0; x1B=3);
II BC: 0≤ x2≤ 1, (x2B=0; x2C=1);
III LD: 0≤ x3≤ 2, (x3L=0; x3D=2);
IV DC: 0≤ x4≤ 2, (x4D=0; x4C=2).
I. () Q , .
1 . . :
x1, I,
Q1A(x1=0) =YA=212; Q1B(x1=3) =YA-3q=-88;
M1A(x1=0) =0∙; M1B (x1=3) =3YA-32q/2=186 ∙.
.. Q , , , Q=0. , , (Q=0) . :
, x 1=YA/q= 212/100=2,12 .
x 1= 2,12 ,
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ͷ.
II. Q , .
2 . . :
( 2);
.
x2, II,
ͷ;
ͷ.
III. L Q , .
x3 . . :
( 3);
.
x3, III,
;
ͷ.
IV. D Q , .
x4 . . :
( 4);
x4, IV,
ͷ.
ͷ.
Q M. 5.3 - .
.
Mmax. , Mmax =225 ͷ.
3.
8239-89 ( .5). 50:
3, - A=1002.
5.3
F | m | q | |||||
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1. ? ?
2. Q M?
3. ?
4. ?
5.1 | . | |
5.2 | . | |
5.3 | . | |
5.4 | . | |
5.5 | . | |
5.6 | . | |
5.7 | . | |
5.8 | l. |
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5.9 | . | 1. 4, 1, 2, 3 2. 2, 1, 3, 4 3. 2, 3, 4, 1 4. 4, 2, 3, 1 |
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