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Chapter 5 Complex Numbers and Quadratic Equations Ex 5.1 Solutions

Question - 11 : - Find the multiplicative inverse of the complex number 4 – 3i

Answer - 11 : -

Let z = 4 – 3i

Then,

= 4 + 3i and 

Therefore, the multiplicative inverse of 4 – 3i isgiven by

Question - 12 : - Find the multiplicative inverse of the complex number  

Answer - 12 : -

Let z = 

Therefore,the multiplicative inverse of is given by

Question - 13 : - Find the multiplicative inverse of the complex number –i

Answer - 13 : -

Let z = –i

Therefore, the multiplicative inverse of –i isgiven by

Question - 14 : - Express the following expression in the form of a + ib.

Answer - 14 : -


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