यदि ω एकत्व का एक घन मूल है तो सारणिक  का मान क्या है?

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  1. 3ω 
  2. -3ω
  3. 2
  4. -3ω2

Answer (Detailed Solution Below)

Option 4 : -3ω2
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NIMCET 2020 Official Paper
120 Qs. 480 Marks 120 Mins

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संकल्पना:

ω एकत्व का घन मूल है।

एकत्व के घनमूल का गुण:

  • ω = 1
  • 1 + ω + ω= 0

गणना:

दिया, ω एकत्व का घन मूल है।

⇒ω= 1, ad 1 + ω + ω2 = 0

अब, सारणिक

 

ω और -ω को क्रमशः C2 और C3 से उभयनिष्ठ लेकर

=

=

=

=

=

= 0 - 3ω 2

= -3ω2

इसलिए, सारणिक का मान -3ω2 है

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