((1+x)^n) में ऐसे coefficients का sum जिनके indices (3) से विभाज्य हैं, अलग करने की advanced technique क्या है?
What advanced technique separates the sum of coefficients in ((1+x)^n) whose indices are divisible by (3)?
Explanation opens after your attempt
A. Unity roots filter
Concept
The cube roots of unity filter is used to separate modulo (3) classes. In exams distinguish (3)-step coefficient sums from even-odd sums.
Why this answer is correct
The correct answer is A. Unity roots filter. The cube roots of unity filter is used to separate modulo (3) classes. In exams distinguish (3)-step coefficient sums from even-odd sums.
Exam Tip
Modulo (3) classes अलग करने के लिए cube roots of unity का filter उपयोग होता है। परीक्षा में (3)-step coefficient sums को even-odd से अलग पहचानें।
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