Q11 of 202 Page 171

Find the multiplicative inverse of each of the following:

Given:

To find: Multiplicative inverse

We know that,

Multiplicative Inverse of z = z^-1

Now, rationalizing by multiply and divide by the conjugate of (2+3i)

Using (a – b)(a + b) = (a² – b²)

[∵ i² = -1]

Find the multiplicative inverse of each of the following:

(2 + 5i)

Find the multiplicative inverse of each of the following:

If = (a + ib), find the values of a and b.