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2.19. JJ( 4 x-y+z)dS,(j>): x-y+ z = 2 . (Ответ: 8-/I.)<br />

S<br />

2.20. JJ(6 * - y + 8 г )^ , (p): x+ y+ 2z “ 2 . (Ответ: 6 j6 .<br />

S<br />

2.21. JJ(4 x-4 .y-*)< iS, (p): x+2y+2z = 4 . (О т в е т :44.)<br />

S<br />

2.22. JJ(2 x + 5 y + * )iS ,(p ): x+j>+2* = 2 . (Ответ: S j6 .)<br />

S<br />

2.23. JJ(4x-y+4z)< tS, (p): 2x+2y+z “ 4. (Ответ: 44.)<br />

S<br />

2.24. jj(5 x + 2y+2z)dS, (p): x + 2y + z = 2. (Ответ:<br />

5<br />

16„/3/6 •)<br />

2.25. JJ(2 x + 5y+ l0z)dS, (p): 2x+y+5z m 6. (Ответ:<br />

S<br />

5 5 Л 4 .)<br />

2.26. JJ(2 x + 15y + *)ЛУ, (p): x + 2y+ 2z = 2 . (Ответ: 10.)<br />

S<br />

2.27. fJ(3x+-10y-«)rtS, (p): x + 3 y + 2 * - 6 . (Ответ:<br />

S<br />

35 «/14.)<br />

2.28. JJ(2 x + 3 y + *)d S, (p): 2x+2y+z = 2 .(Ответ: 1/6.)<br />

S<br />

2.29. jj(S x - у + Sz)dS, (p): 3x+2y + < = 6. (Ответ:<br />

S<br />

37714.)<br />

312

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