, .. , , . . n = m. , :
2x1 + x2 = 3
2x1+ 2x2 = 4
, : (. 42):
. 42.
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, i=1,2,3,,n; j=1,2,3,.,n
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, i=1,2,3,,n , i=1,2,3,,n
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, . , :
. Excel A2:C4 ( ), E2:E4 - ( ). =(), A7:C9. E7:E9 =() . Excel (. 43,44).
8x1 13x2 6x3 =4
3x1+ 8x22x3 = 5
x110x2 = 6
A=
. 43.
. 44.
. 1.
.1.1. : , x Î [-5;5]:
1: y=0,1x30,16x2+8,04x+11,78
2: y=0,00142x5+0,006x4+0,39x31,09x22,81x+6,19
3:
4: y=2*(cos(x)+2)^sin(x-2)-2.1;
5: y=0,16x30,15x2+7,62x+5,26
6: y=0,00388x5+0,005x4+0,28x31,03x24,61x+4,78
7:
8: y=2*(cos(1,5x)+2,5)sin(x-1)+1.5;
9: y=0,17x30,14x2+6,13x+18,48
10: y=0,00258x5+0,01x4+0,22x31,11x24,63x+7,76
11:
12: y=1,2(sin(x)+2,2)cos(x+1)-1.2;
13: y=0,17x30,12x2+6,31x+3,83
14: y=0,00367x5+0,005x4+0,23x31,06x24,39x+8,99
15:
16: y=1,4*(0,5cos(2x)+3)sin(x+3)-2;
17: y=0,13x30,12x2+6,63x+11,6
18: y=0,00185x5+0,008x4+0,27x31,01x24,80x+3,56
19:
20: y=1,3(0,5cos(x)+1,5)atan(x)-1.5;
21: y=0,17x30,15x2+9,35x+12,44
22: y=0,00250x5+0,007x4+0,37x31,15x27,40x+6,59
23:
24: y=1,4*(cos(3x)+2,8)atan(x+5)-5;
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25: y=0,12x30,11x2+9,90x+6,64
26: y=0,00333x5+0,005x4+0,25x31,20x21,39x+2,47
27:
28: y=5(0,4*sin(x)+1)atan(x-1)-5.5;
29: y=0,16x30,13x2+8,57x+17,30
30: y=0,00167x5+0,005x4+0,35x31,13x22,12x+4,81
. 1.2. : . .
1. xÎ [1,4;1,9]:
y = ((1+|x|)0,5)/(2+|x|) x ≤ 0
y = (1+x)/(2+cos3(x)) x > 0
2. xÎ [3,5;3,5]:
y = cos(3x)*sin(x) x ≤ 0
y = cos2(x) cos(3x) x > 0
3. xÎ[-1,7;1,5]:
y = (1+x2)0,5 x ≤ 0
y = (1+x)/(1+(1+ e0.2x)(1/3)) x > 0
4. xÎ [3,5;3,5]:
y = 2cos(4x)*sin(2x) x ≤ 0
y = cos2(3x) cos(x)*sin(x) x > 0
5. xÎ[2;1,8]:
y = (1 + x)/(1+ x2) x ≤ 0
y = ((1+2x)/(1+x))0,5 x > 0
6. xÎ [3,5;3,5]:
y = 3sin(3x)*cos(2x) x ≤ 0
y = sin(x)*cos3(x) x > 0
7. xÎ[1.8;1,8]:
y = (3 + sin(x))/(1+ x2) x ≤ 0
y = 2x2cos2(x) x > 0
8. xÎ [3,5;3,5]:
y = 2sin(x)* cos(x) x ≤ 0
y = sin(3x)*cos2(x) x > 0
9. xÎ[2;3,5]:
y = ((1 + 2x2)/(1+ x2))0,5 x ≤ 0
y = 2cos2(x) x > 0
10. xÎ [3,5;3,5]:
y = 3sin(2x)*cos(x) cos2(3x) x ≤ 0
y = 2cos2(2x) 3sin(3x) x > 0
11. xÎ[2;1,5]::
y = 3x + (1+x 2)0,5 x ≤ 0
y = 2sin(3x) x > 0
12. xÎ [3,5;3,5]:
y = 5sin(x) cos(3x)*sin(x) x ≤ 0
y = cos(2x) 2sin3(x) x > 0
13. xÎ[3,5;2]:
y = 3sin(x) cos2(x) x ≤ 0
y = 3(1+x2)0,5 x > 0
14. xÎ [3,5;3,5]:
y = 2sin(x)+ 3cos(x) x ≤ 0
y = cos2(2x) 2sin(x) x > 0
15. xÎ [1,4;1,9]:
y = (1+|x|)/((x2 + x + 1)(1/3)) x ≤ 0
y = 1 + ln(x2 + 1) x > 0
16. xÎ [3,5;3,5]:
y = 6sin(x)*cos(x) x ≤ 0
y = 3cos2(x)*sin(x) x > 0
17. xÎ[1,2;1,7]:
y = ((1+|x|)0,5)/(5+|x|) x ≤ 0
y = (1+x)/(2+cos2(x)) x > 0
18. xÎ [3,5;3,5]:
y = cos(x)* sin(3x) x ≤ 0
y = cos2(2x) cos(3x) x > 0
19. xÎ[1,5;1,7]:
y = (2+x2)0,5 x ≤ 0
y = (1+x)/(2+(1+ e0.3x)(1/3)) x > 0
20. xÎ [3,5;3,5]:
y = 2cos(2x)*sin(4x) x ≤ 0
y = cos2(x) cos(x)*sin(3x) x > 0
21. xÎ[1,3;1,3]:
y = (2+x)1/3; x<0
y = sin(2x)*cos(x); x≥0
22. xÎ [3,5;3,5]:
y = sin(x)*cos(2x) x ≤ 0
y = 2cos(x)*sin(x) x > 0
23. xÎ[1,8;1,5]:
y = (1+|x|)0,5 x ≤ 0
y = (1+2x)/(1+(2+x)1/3) x > 0
24. xÎ [3,5;3,5]:
y = 3sin(2x)*cos(3x) x ≤ 0
y = cos2(x)*sin(2x) x > 0
25. xÎ [1,4;1,9]:
y = ((1+|x|)0,5)/(3+|x|) x ≤ 0
y = (1+x)/(1+2cos2(x)) x > 0
26. xÎ [3,5;3,5]:
y = cos(3x)*sin(x) x ≤ 0
y = cos2(x) cos(3x) x > 0
27. xÎ[1,5;1,5]:
y = (1+x2)0,5 x ≤ 0
y = (1+x)/(1+(1+ e0.2x)(1/3)) x > 0
28. xÎ [3,5;3,5]:
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y = 2cos(x)* sin(4x) x ≤ 0
y = cos3(2x) cos(x)*sin2(x) x > 0
29. xÎ[1,8;1,8]:
y = (1 + x)/(1+ 2x2) x ≤ 0
y = ((2 + x)/(1+x))0,5 x > 0
30. xÎ [3,5;3,5]:
y = 3sin(2x)*cos(3x) x ≤ 0
y = sin(x)*cos2(x) x > 0
. 1.3. : . .
1. xÎ [2; 4], 0,5:
y = 3sin(x) cos(4x)<1,5
= cos(3x) 4sin(x) x Î [1,5; 1]
y = (1 + x)/(1+ 2x3) >1
2. xÎ [3,5; 2,5], 0,5:
y = 3sin(x)cos(4x)*sin(4x) <1,5
= cos(3x) 4sin(x) x Î [1,5; 1]
y = (1 + x)/(1+ 2x3) >1
3. x Î [2; 6], 0,5:
y = (0.25+x3)1/3 x < 0
y = 2sin(3x) + cos(x); x Î [0;3]
y = (1+x)/(1+(1+ e-0.2x)1/3) x > 3
4. xÎ [2,6; 4,6] 0,5:
y = (1+x)/(2+cos(3x)) x Î [0,3; 3]
y = ((1+|x|)0,5)/(2+|x|) x < 0,3
y =e-2x; x >3
5. xÎ [2; 4], 0,5:
y = (1+4x)/(2+ln(x)) x>2
y = (1+x2)0,5 x Î [0; 2]
y = sin(x)*cos(x); x < 0
6. xÎ [6; 6], 0,5:
y = (1 + x)/(1+ x2) x < 0
y = 1 + ln(x2 + 1) x Î [0; 3]
y = ((1+2x)/(1+x))0,5 x > 3
7. xÎ [6; 6], 1:
y = (3 + sin(x))/(1+ x2) x < 0
y = 2x2cos(2x) x Î [0; 3]
y = ((1 + 2x2)/(1+ x2))0,5 x >3
8. xÎ [2,10], 1:
y = 2cos(2*x) x < 2
y = (1+x)1/3; x Î [2;5]
y = 3x + (1+x2)0,5 x >5
9. xÎ [2; 6], 0,5:
y = 2sin(3x) x <0
y = 3sin(x) cos(2x) x Î [0;3]
y = (1+|x|)/((x2 + x + 1)1/3) x > 3
10. xÎ [1; 6], 0,5:
y =(tn(3x) sin(2x)) x < 3
y = 3(1+x2)0,5 x Î[3;5]
y = 3sin(x) cos(2x) x >5
11. xÎ [-10; 5], 1:
y =2x3 x < 0
y = sin(x)*cos(x); x Î[0;3]
y = ((1+2x)/(1+x))0,5 x > 3
12. x Î [2; 6], 0,5:
y = e-2x; x<0
y = 2sin(3x) x Î[0;3]
y = 3(1+x2)0,5 x > 3
13. xÎ [0; 11], 1:
y = 2sin(3x) + cos(x); x<3
y = 3sin(x) cos2(x) x Î[3;6]
y = (3 + sin(x))/(1+ x2) x > 6
14. xÎ [4; 5], 0,5:
y = 1 + ln(x2 + 1) x < 0
y = 3*x + (1+x2)0,5 x Î[0;2]
y = (1+x)/(1+(1+ e-0.2x)1/3) x > 2
15. x Î [2; 6], 0,5:
y = (1+x2)0,5 x < 0
y = 2x2cos(2x) x Î [0;3]
y = (1+|x|)/((x2 + x + 1)1/3) x >3
16. xÎ [3,5; 3,5], 0,5:
y = (1 + sin(x))/(1+ 2x2) x < 0
y = 3x3cos(2x) x Î [0; 2]
y = 2sin(x)* cos(x) >2
17. xÎ [3,5; 2], 0,5:
= sin(3x)*cos(2x) <0,5
y = ((1 + 3x2)/(1+ 2x2))0,5 x Î[0,5; 1]
y = 3cos(2x) x > 1
18. x Î [2,5; 2,5], 0,5:
y = sin(2x)*cos(x) cos2(2x) <1,5
= 2cos2(x) 3sin(x) xÎ [1,5;1,5]
y = 2x + (3+x2)0,5 x >1,5
19. xÎ [-3,5;3,5], 0,5:
y = 3sin(x) x < 0
y = 3sin(x) cos(5x)*sin(x) x Î[0; 2]
= cos2(x) 2sin(3x) >2
20. xÎ [1; 3], 0,5:
y = sin(x) 3cos(2x) x< 0
y = 2(1+x3)0,5 x Î[0;2]
y = 2sin(x)* 3cos(x) >2
21. xÎ [1,9; 1,9], 0,3:
= cos2(2x) sin(x) x Î [0;1]
y = (1+|x|)/(x2 + 4)1/3 x < 0
y = 1 + ln(x + 1) x >1
22. xÎ [3,5; 3,5], 0,5:
y = sin(x)*cos(6x) x >2
= cos(2x)*sin(3x) x Î[2; 2]
y = (2+|x|)0,5/(3+|x|) <2
23. xÎ [1,7; 1,2], 0,1:
y = (1+x)/(5+cos(2x)) x < 0
y = 3*cos(x)*sin(x) x Î[0; 0,8]
= cos(2x) cos(3x) >0,8
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24. xÎ [1,5; 1,7], 0,1:
y = (3+x2)0,5 x <-0,5
y = (1+x)/3+(1+ e0.5x)1/3 xÎ[0,5;0,5]
y = 4cos(3x)*sin(2x) x > 0,5
25. xÎ [2; 6], 0,5:
= cos3(x) cos(2x)*sin(x) x <1
y = (1 + x)/(1+ 2x3) x Î [1;3]
y = (2 + x)/(3+x)0,5 x > 3
26. xÎ [1; 3], 0,5:
y = 3sin(3x)*cos(4x) <0
= sin(4x)*cos2(x) x Î[0;1,5]
y = 2sin(2x)*cos(2x) >1,5
27. xÎ [1,7; 2,7], 0,2:
y = (1 + sin(x)/(1+ 3x2) x < 0
y = 3x2cos2(3x) x Î[0; 1,7]
= sin(3x)*cos2(3x) x > 1,7
28. xÎ [3,5; 2,5], 0,5:
y = (1 + 2x2)/(3+ 5x2)0,5 x < -1
y = 2cos2(2x) x Î [1; 2]
y = sin(2x)*cos(3x) cos2(x) >2
29. xÎ [2,5; 3,5], 0,5:
y = 4x + (4+x2)0,5 x < 0
y = 4sin(x) x Î [0; 2]
= 2cos(x) sin2(3x) x > 2
30. xÎ[3,5; 2,5], 0,5:
y = 3sin(x) cos(4x)*sin(4x) <1,5
= cos3(x) 4sin(x) x Î[1,5; 1]
y = (1 + x)/(1+ 2x3) >1
. 1.4. : 2
1. xÎ [3,5;3,5], 0,5:
y= 2cos(4x)*sin(2x)
z= |cox(x)*sin(x) |
2. xÎ [3,5;3,5], 0,5:
y = |sin(4x)*cos(x)|
z = cos(x)*sin(4x)
3. xÎ [4;4], 1:
y = 2sin(x)
z = 3cos(2x)sin(x)
4. xÎ [4;4], 0,5:
y = 2sin(5x)cos(4x)
z = sin2(x)
5. x Î [ 3,5;3,5], 0,5:
y = 2sin(2 p x)cos(p x)+sin(3 p x);
z = (1 + x)/(1+ 2 x 3) >1
6. xÎ [2;2], 0,2:
y = 2sin(x)cos(x);
z = 3cos2(x)sin(x).
7. xÎ [3;4], 0,5:
y = 2sin(5x)cos(4x)
z = | cos(x)*sin(x) |
8. x Î [ 3,5;3,5], 0,5:
y = (0,25+ x 3)1/3
y = e -2 x
9. xÎ [2;2], 0,2:
y =tn(3x) sin(2x)
z = sin(x)*cos(x);
10. xÎ [3,5;3,5], 0,5:
y = 3sin(x) cos2(x)
z =2x3
11. xÎ [5;5], 0,5:
y = ((1+|x|)0,5)/(2+|x|)
z = 2cos2(x)
12. xÎ [2;2], 0,2:
y = ((1 + 2x2)/(1+ x2))0,5
z = (1+x)/(2+cos3(x))
13. xÎ [0,1;3], 0,25:
y = e-2x
z= (1+4x)/(2+ln(x))
14. xÎ [2,5;2,5], 0,5:
y = sin(3x)*cos2(x)
z = 2sin(3x) + cos(x)
15. xÎ [0;5], 0,5:
y = (0,25+x3)1/3
z = (1+4x)/(2+ln(x))
16. xÎ [0;3,6], 0,3:
y = (1 + 2x2)/(3+ 5x2)0,5
y = 3sin(x)*cos(4x)*sin(4x)
17. xÎ [5;5], 0,5:
y = 2cos2(2x)
z = cos3(x) 4sin(x)
18. xÎ [2;2], 0,1:
y = sin(2x)*cos(3x) cos2(x)
z = (1 + x)/(1+ 2x3) >1
19. xÎ [2,5;2,5], 0,5:
y = 4x + (4+x2)0,5
z = sin(x)*cos(2x)
20. xÎ [0;3], 0,25:
y = cos(3x)*sin(x)
z = cos2(x) cos(3x)
21. xÎ [3;3], 0,2:
y = 4sin(x)
z = 2cos(x)*sin(x)
22. xÎ [5;5], 0,5:
= 2cos(x) sin2(3x)
z = | cos(x)*sin(x) |
23. xÎ [3,5;3,5], 0,5:
y = 3sin(3x)*cos(2x)
z = sin(3x)*cos2(x)
24. xÎ [2;2], 0,2:
y = 2cos2(2x) 3sin(3x)
z = 2sin(3x)
25. xÎ [2,5;2,5], 0,5:
y= 2cos(4x)*sin(2x)
z = (2+x)1/3
26. xÎ [0;3,6], 0,3:
y = 3sin(2x)*cos(3x)
z = sin(x)*cos(2x)
27. xÎ [5;5], 0,5:
y = 2sin(3x) + cos(x);
z = 1 + ln(x2 + 1)
28. xÎ [0;3], 0,25:
y = 3x3cos(2x)
z = 3sin(x)
29. xÎ [2,5;2,5], 0,5:
y =tn(3x) sin(2x)
z = sin(x)*cos(6x)
30. xÎ [2;2], 0,2:
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= cos(2x)*sin(3x)
z = cos(2x) cos(3x)
. 1.5. : x Î [ 2,2] y Î [ 2,2], 0,5:
1. z = x22y2
2. Z=7x36y2
3. z=(0,5x5)2+2(2y6)2
4. z=(0,5x3)2+(0,5y3)2
5. z=0,5(2x1)2+0,7(3y3)2
6. z=0,5(2x-5)3+0,5(3y5)2
7. z=(20x5)2+(4y5)3
8. z=(x-5)2+(y-6)2
9. z=3*(x5)2+3(y5)2
10. z=3(x5)2+(y6)2
11. z=exey
12. z=233y2
13. z = 3x2(y)5y2
14. z = 3x22sin2y
15. =2, b =3
16.
17. x2+ y2 + z2 = 42
18. x2/a2 + y2/b2 - z2/c2 = 1 =3, b =2, c =1
19. x2/a2 + y2/b2 z2/c2 = 0 . =3, b =2, c =1
20. z =x26y2
21.
22.
23. z=3⋅e−(x−2)2−(y−4)
24. z =10x25y2
25. z =sin(x*y)
26.
27. z=x2y26
28.
29. Z=x3*yy3*x
30. Z=11.83+19.406*x11.323*y5.17*x24.563*x*y+2.351*y2
.1.6. : . , . , R 2. .
.1