Question:

The value of $\left(1+i\right)^{4} \left(1+\frac{1}{i}\right)^{4}$ is

Updated On: Jul 7, 2022
  • $12$
  • $2$
  • $8$
  • $16$
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The Correct Option is D

Solution and Explanation

$\left(1+i\right)^{4}\times\left(1+\frac{1}{i}\right)^{4}$ $=\left(1+i\right)^{4}\times\left(1-i\right)^{4}$ $=\left(1-i^{2}\right)^{4}$ $=\left(1+1\right)^{4}$ $=2^{4}$ $=16$
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Concepts Used:

Complex Number

A Complex Number is written in the form

a + ib

where,

  • “a” is a real number
  • “b” is an imaginary number

The Complex Number consists of a symbol “i” which satisfies the condition i^2 = −1. Complex Numbers are mentioned as the extension of one-dimensional number lines. In a complex plane, a Complex Number indicated as a + bi is usually represented in the form of the point (a, b). We have to pay attention that a Complex Number with absolutely no real part, such as – i, -5i, etc, is called purely imaginary. Also, a Complex Number with perfectly no imaginary part is known as a real number.