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Coefficient of t 24 in (1 + t 2 ) 12 (1 + t 12 )(1 + t 24 ) is….?

Coefficient of t24 in (1 + t2)12(1 + t12)(1 + t24) is….?

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2 Answers

noogler
489 Points
8 years ago
=928
 
expand [1+t2]12  .............coeff of t12=[t2]6=12C6
…...................................coeff of t24=12c12 
now,coeff of t24 in given exp is 1*1+1*1+1*1+1*12c12+1*12c6
 
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Komal
askIITians Faculty 747 Points
8 years ago
Coefficient of t24 in (1 + t2)12(1 + t12)(1 + t24) is 926

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