Question:

\(\text{Find the number of non-zero integral solutions of the equation }|1-i|^x=2^2.\)

Updated On: Oct 23, 2023
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Solution and Explanation

\(|1-i|^x=2^2\)

\(⇒(\sqrt1^2+(-1)^2)=2^x\)

\(⇒(\sqrt2)^x=2^2\)

\(⇒2^{\frac{x}{2}}=2^x\)

\(⇒\frac{x}{2}=x\)

\(⇒x=2x\)

\(⇒2x-x=0\)

\(⇒x=0\)

\(\text{Thus, 0 is the only integral solution of the given equation. Therefore, the number of non-zero integral solutions of the given equation is 0.}\)

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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.