Uploaded by Andrés López Gónzalez

Tarea moral I

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Cálculo Diferencial e Integral I
Facultad de Ciencias, Universidad Nacional Autónoma de México
Profesor: Juan Gabriel Herrera Alva (gabalva@ciencias.unam.mx)
Fecha de entrega: Primer perı́odo de Evalauación
Nombre completo: Andrés López González
Tarea moral I
Axiomas de campo
42. (−1)a = −a
43. a(−b) = −ab = (−a)b
44. (−a)(−b) = ab
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45. 1−1 = 1
46. (a−1 )−1 = a, (a ̸= 0)
47. −0 = 0
48. (ab)−1 = a−1 b−1
49. −(a + b) = −a − b
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50. −(−1−1 ) = 1
51. a + c = b + c ⇒ a = b
52. ac = bc, c ̸= 0 ⇒ a = b
53. a−1 + b−1 = (a + b)(ab)−1
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54. (a + b)(a − b) = a2 − b2
55. −(a − b) = −a + b
56. (ab−1 )−1 = a−1 b
57. (ab−1 )(cd−1 )−1 = (ad)(bc)−1
58. (−1)−1 = −1
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59. a − (b − c) = a − b + c
60. (a + (−b)) − (c + (−d)) = (a + d) − (b + c)
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