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Ejercicios resueltos de Cálculo - Universidad de Málaga

Ejercicios resueltos de Cálculo - Universidad de Málaga

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El cuerpo <strong>de</strong> los números complejos 9<br />

Problema 6 Expresar los números complejos siguientes en la forma “a + bi”:<br />

(1 + i) 2 ; 1/i; 1/(1 + i); (2 + 3i)(3 − 4i); (1 + i)/(1 − 2i); i 5 + i 16 ; 1<br />

2 (1 + i)(1 + i−8 )<br />

✎ (1 + i) 2 = 1 + 2i − 1 = 2i.<br />

✎ 1<br />

i<br />

=<br />

i<br />

i2 = −i.<br />

✎ 1 1 − i 1 1<br />

= = −<br />

1 + i 1 + 1 2 2 i.<br />

✎ (2 + 3i)(3 − 4i) = 6 − 12i 2 + i = 18 + i.<br />

✎<br />

1 + i<br />

1 − 2i<br />

= 1<br />

5<br />

1<br />

(1 + i)(1 + 2i) = 5 (−1 + 3i).<br />

✎ i 5 + i 16 = (−1) 2 i + (−1) 8 = i + 1.<br />

✎ 1<br />

2 (1 + i)(1 + i−8 ) = 1<br />

(1 + i)(1 + 1) = 1 + i.<br />

2<br />

<strong>Ejercicios</strong> <strong>resueltos</strong> <strong>de</strong> <strong>Cálculo</strong>. c○Agustín Valver<strong>de</strong>

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