31. (7x² + 2) - (3x² - 5)
= 4x²+7
32. (8x²- x) - (7x² + 3x)
= 1x²- 3x -x
33. (3x² - 2x - 1) - (4x² + 2x + 5)
= -1x² - 4x - 6
34. (-3x + x²-1) - (5x + 1 - 3x²)
= 4x²- 8x - 2
35. (-1+ 7x² - 2x) - (5x + 3x² -7)
= 4x² -7x + 6
36. (7x3- x² + x - 1) - (2x² +3x + 6)
= 7x3 -3x² -2x -7
37. (5x²- 2x + 5) - (3x3 - x²+ 5)
= 3x3 + 6x² - 2x
38. (3x² -x -7) - (5x3 + 5 -x² + 2x)
= -5x3 + 4x² - 3x - 12
39. (6x3 -2x² -3x + 1) - (-x3 -x²-5x +7)
= 7x3- 1x² + 2x -6
40. (x -3x² +x3 +9) - (-8+7x -x² +x3 )
= -2x² -6x + 17
martes, 28 de septiembre de 2010
lunes, 6 de septiembre de 2010
2da tarea sucesiones y series numéricas
Resolver en su blog las siguientes sucesiones y series Numéricas:
1.- a1= -27 d= 2 12 terminos
n= a1 + d
-27,-25,-23,-21,-19,-17,-15,-13,-11,-9,-7,-5
2.- a1= -34/9 d= 2/3 9 terminos
n=a1 + d
-34/9+2/3=120/27+2/3=414/81+2/3=1404/243+2/3=4698/729+2/3
=15552/2187+2/3=51030/6561+2/3=166212/19683+2/3=538002/59049
3.- a1= 67 d= -3.75 10 terminos
n=a1 + d
67-3.75=63.25,59.50,55.75,52.00,48.25,44.50,40.75,37.00,33.25,29.50
4.- a1= 128.15 d=-12.35 7 terminos
n=a1 + d
128.15-12.35=115.80,103.45,91.10,78.75,66.40,54.05,41.70
5.- a1= 63/7 d= -9/7 11 terminos
n=a1 + d
63/7+-9/7=54/7,45/7,36/7,27/7,18/7,9/7,0/7,-9/7,-18/7,-27/7,-36/7
6.- a1= -3 an= 187 n= -75
sn=(a1+an)n/2
sn=(-3+187)-75/2=(-184)(-75)/2=13800/2=6900
7.- a1= 2 an= 215 n= 164
sn=(a1+an)n/2
sn=(2+215)164/2=(217)(164)/2=35588/2=17794
8.- a1= 21 an= 276 n= 321
sn=(a1+an)n/2
sn=(21+276)321/2=(297)(321)/2=95337/2=476685
9.- a1= -78 d= -49
n=a1+d (n-1)
=-78+-49 (n-1)
=-127(n-1)
n-1=-126
10.- a1= 345 d= -169
n=a1+d (n-1)
=345+-169 (n-1)
=176 (n-1)
n-1= 175
1.- a1= -27 d= 2 12 terminos
n= a1 + d
-27,-25,-23,-21,-19,-17,-15,-13,-11,-9,-7,-5
2.- a1= -34/9 d= 2/3 9 terminos
n=a1 + d
-34/9+2/3=120/27+2/3=414/81+2/3=1404/243+2/3=4698/729+2/3
=15552/2187+2/3=51030/6561+2/3=166212/19683+2/3=538002/59049
3.- a1= 67 d= -3.75 10 terminos
n=a1 + d
67-3.75=63.25,59.50,55.75,52.00,48.25,44.50,40.75,37.00,33.25,29.50
4.- a1= 128.15 d=-12.35 7 terminos
n=a1 + d
128.15-12.35=115.80,103.45,91.10,78.75,66.40,54.05,41.70
5.- a1= 63/7 d= -9/7 11 terminos
n=a1 + d
63/7+-9/7=54/7,45/7,36/7,27/7,18/7,9/7,0/7,-9/7,-18/7,-27/7,-36/7
6.- a1= -3 an= 187 n= -75
sn=(a1+an)n/2
sn=(-3+187)-75/2=(-184)(-75)/2=13800/2=6900
7.- a1= 2 an= 215 n= 164
sn=(a1+an)n/2
sn=(2+215)164/2=(217)(164)/2=35588/2=17794
8.- a1= 21 an= 276 n= 321
sn=(a1+an)n/2
sn=(21+276)321/2=(297)(321)/2=95337/2=476685
9.- a1= -78 d= -49
n=a1+d (n-1)
=-78+-49 (n-1)
=-127(n-1)
n-1=-126
10.- a1= 345 d= -169
n=a1+d (n-1)
=345+-169 (n-1)
=176 (n-1)
n-1= 175
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