यदि ω एकल का घनमूल है, तो 

\(\rm\begin{vmatrix} 1 & \omega &\omega^2 \\ \omega & \omega^2 &1 \\ \omega^2& 1 & \omega \end{vmatrix}\) का मान क्या है?

  1. 1
  2. \(\rm \omega + \omega^2\)
  3. 0
  4. \(\rm 1 \over1+ \omega + \omega^2\)

Answer (Detailed Solution Below)

Option 3 : 0
Free
General Knowledge for All Defence Exams (शूरवीर): Special Live Test
22.4 K Users
20 Questions 20 Marks 16 Mins

Detailed Solution

Download Solution PDF

संकल्पना:

यदि 1, ω और ωएकल के घनमूल हैं, तो 1 + ω + ω2 = 0 है। 

यदि वर्ग आव्यूह में किसी पंक्ति और स्तंभ में सभी तत्व शून्य है, तो सारणिक शून्य है। 

गणना:

D = \(\rm\begin{vmatrix} 1 & ω &ω^2 \\ ω & ω^2 &1 \\ ω^2& 1 & ω \end{vmatrix}\)

R3 = R3 + R1 + R2

D = \(\rm\begin{vmatrix} 1 & ω &1+ω+ω^2 \\ ω & ω^2 &1+ω+ω^2 \\ ω^2& 1 & 1+ω+ω^2 \end{vmatrix}\)

D = \(\rm\begin{vmatrix} 1 & ω &0 \\ ω & ω^2 &0 \\ ω^2& 1 & 0 \end{vmatrix}\) = 0

Latest Airforce Group X Updates

Last updated on Jul 11, 2025

->Indian Airforce Agniveer (02/2026) Online Form Link has been activated at the official portal. Interested candidates can apply between 11th July to 31st July 2025.

->The Examination will be held 25th September 2025 onwards.

-> Earlier, Indian Airforce Agniveer Group X 2025 Last date had been extended.

-> Candidates applied online from 7th to 2nd February 2025.

-> The online examination was conducted from 22nd March 2025 onwards.

-> The selection of the candidates will depend on three stages which are Phase 1 (Online Written Test), Phase 2 ( DV, Physical Fitness Test, Adaptability Test), and Phase 3 (Medical Examination).

-> The candidates who will qualify all the stages of selection process will be selected for the Air Force Group X posts & will receive a salary ranging of Rs. 30,000.

-> This is one of the most sought jobs. Candidates can also check the Airforce Group X Eligibility here.

More Evaluation of Determinants Questions

More Determinants Questions

Get Free Access Now
Hot Links: online teen patti real money teen patti gold new version 2024 teen patti octro 3 patti rummy master teen patti teen patti online game