1.

Find the multiplicative inverse of the complex number.`sqrt(5)+3i`

Answer» let `sqrt 5 + 3i=z`
so`z^-1 = 1/z`
`= 1/(sqrt5+3i)`
rationalizing it , we get
`1/(sqrt5 + 3i)*(sqrt5 - 3i)/(sqrt5- 3i) `
`= (sqrt5 - 3i)/(5+9)`
`= (sqrt5 -3i)/14`
answer


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