tarea de algebra 4

1: (7x2+2)-(3x2-5)=
7x2+2-3x2+5
7-3=4x2
2+5=7
R=4x2+7
2: (8x2-x)-(7x2+3x)=
8x2-x-7x2-3x
8-7=1x2
-1-3=-4x
R=1x2-4x
3: ( 3x2-2x-1)-(4x2+2x+5)=
3x2-2x-1-4x2-2x-5
3-4=-1x2
-2-2=-4x
-1-5=-6
R=-1x2-4x-6
4: (-3x+x2-1)-(5x+1-3x2)=
-3x+x2-1-5x-1+3x2
1+3=4x2
-3-5=-8x
-1+1=0
R= 4x2-8x+0
5: (-1+7x2-2x)-(5x+3x2-7)
-1+7x2-2x-5x-3x2+7
7-3=4x2
-2-5=-7x
-1+7=6
R= 4x2-7x+6
6: (7x3-x2+x-1)-(2x2+3x+6)=
7x3-x2+x-1-2x2-3x-6
7x3
-1-2=-3x2
1-3=-2x
-1-6=-7
R=7x3-3x2-2x-7
7: (5x2-2x+5)-(3x3-x2+5)=
5x2-2x+5-3x3+x2-5
-3x3
5+1=6x2
-2x
5-5=0
R=-3x+6x2-2x+0
8: (3x2-x-7)-(5x3+5-x2+2x)=
3x2-x-7-5x3-5+x2-2x
-5x3
3+1=4x2
-1-2=-3x
-7-5=-12 R=-5x3+4x2-3x-12
9: (6x3-2x2-3x+1)-(-x3-x2-5x+7)=
6x3-2x2-3x+1+x3+x2+5x-7
6+1=7x3
-2+1=-1x2
-3+5=2x
1-7=-6
R=7x3-1x2+2x-6
10: ( x-3x2+x3+9)-(-8+7x-x2+x3)=
x-3x2+x3+9+8-7x+x2-x3
1-1=0x3
-3+1=-2x2
1-7=-6x
9+8=17
R= 0x3-2x2-6x+17

tarea de algebra 4

1: (7x2+2)-(3x2-5)=
7x2+2-3x2+5
7-3=4x2
2+5=7
R=4x2+7
2: (8x2-x)-(7x2+3x)=
8x2-x-7x2-3x
8-7=1x2
-1-3=-4x
R=1x2-4x
3: ( 3x2-2x-1)-(4x2+2x+5)=
3x2-2x-1-4x2-2x-5
3-4=-1x2
-2-2=-4x
-1-5=-6
R=-1x2-4x-6
4: (-3x+x2-1)-(5x+1-3x2)=
-3x+x2-1-5x-1+3x2
1+3=4x2
-3-5=-8x
-1+1=0
R= 4x2-8x+0
5: (-1+7x2-2x)-(5x+3x2-7)
-1+7x2-2x-5x-3x2+7
7-3=4x2
-2-5=-7x
-1+7=6
R= 4x2-7x+6
6: (7x3-x2+x-1)-(2x2+3x+6)=
7x3-x2+x-1-2x2-3x-6
7x3
-1-2=-3x2
1-3=-2x
-1-6=-7
R=7x3-3x2-2x-7
7: (5x2-2x+5)-(3x3-x2+5)=
5x2-2x+5-3x3+x2-5
-3x3
5+1=6x2
-2x
5-5=0
R=-3x+6x2-2x+0
8: (3x2-x-7)-(5x3+5-x2+2x)=
3x2-x-7-5x3-5+x2-2x
-5x3
3+1=4x2
-1-2=-3x
-7-5=-12 R=-5x3+4x2-3x-12
9: (6x3-2x2-3x+1)-(-x3-x2-5x+7)=
6x3-2x2-3x+1+x3+x2+5x-7
6+1=7x3
-2+1=-1x2
-3+5=2x
1-7=-6
R=7x3-1x2+2x-6
10: ( x-3x2+x3+9)-(-8+7x-x2+x3)=
x-3x2+x3+9+8-7x+x2-x3
1-1=0x3
-3+1=-2x2
1-7=-6x
9+8=17
R= 0x3-2x2-6x+17

tercera tarea de algebra

martes 14 de septiembre del 2010

1.- Y= (6x + 28x - 7)/ (4-2x) con X de -5 a 5

X Y
-5 12.64
-4 11.91
-3 10.9
-2 9.37
-1 6.83
0 1.75
1 13.5
2 0
3 -47.5
4 -32.25
5 -27.16

2.- Y= (8x-(4x+2))5x + (12x -(-4x)/ 3 con 6x de -6 a

x Y
-6 -335
-5 -178
-4 -231
-3 -179
-2 -127
-1 -75
0 -23
1 29
2 75
3 123
4 163
5 207
6 251



3.- Y= 27x - 18 + 21x (5-4x) con X de -6 a 6


x Y
-6 228
-5 156.66
-4 98.66
-3 54
-2 22.66
-1 4.66
0 0
1 6
2 18.66
3 58
4 104
5 163.33
6 236

2da tarea de algebra

domingo 5 d septiembre del 2010

1.- a1= -27 d= 2 12 términos
Formula: N=a1+d
N=-27+2=-25=-23=-21=-19=-17=-15=-13=-11=-9=-7=-5=-3

2.- a1= -34/9 d= 2/3 9 términos
formula: n=a1+d
N=-34/9+2/3 = -84/27 = -198/81 =-432/243 =-810/729 =-972/2187 =1458/6561= 27705/19683 = 122481/2759049 = 544590/27177147


3.- a1= 67 d= -3.75 10 términos
formula: n=a1+d
N=67+3.75=70.35=74.50=78.25=82=85.75=89.50=93.25=97=100.75=
104.50

4.- a1= 128.15 d=-12.35 7 términos
Formula: n= a1+d
N=128.15+12.35=140.50=152.85=165.20=177.55=189.90=202.25=
214.60


5.- a1= 63/7 d= -9/7 11 términos
formula: n=a1+d
N=63/7 +-9/7
-54/7 =-45/7 =-36/7 =-27/7=-18/7=-9/7=1/7=9/7=18/7=27/7=36/7


6.- a1= -3 an= 187 n= -75
formula: ((a1+an)n)/2
(-3+187)-75)/2 =(184 (-75))/2=(-13.800)/2= -6900

7.- a1= 2 an= 215 n= 164
formula ((a1+an)n)/2
(2+215)164)/2 = (217)164)/2 = 35588/2=17794

8.- a1= 21 an= 276 n= 321
formula: ((a1+an)n)/2
(21+176)321)/2 = (297)321)/2=95337/2=47668.5

9.- a1= -78 d= -49
formula: a1+d(n-1)
N=-78+-49 (n-1)
N=-127(n-1)
N-1=-127
n=-127+1
n=-126

10.- a1= 345 d= -169
Formula: a1+d(n-1)
N=345+-169 (n-1)
N=176 (n-1)
N-1=176
N=176+1
N=177