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Grazes
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Find the middle term of the binomial expansion of (3ab)^10
 one year ago
 one year ago
Grazes Group Title
Find the middle term of the binomial expansion of (3ab)^10
 one year ago
 one year ago

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Grazes Group TitleBest ResponseYou've already chosen the best response.0
n+1 terms, so 11 terms. 6th term, I guess
 one year ago

Grazes Group TitleBest ResponseYou've already chosen the best response.0
I know the answer, but I was wondering if there was a method to solve it without guessing/inferring what the i1 of \[\left(\begin{matrix}n \\ i1\end{matrix}\right) a ^{n(i1)} b ^{i1}\] is.
 one year ago

Grazes Group TitleBest ResponseYou've already chosen the best response.0
I copied it verbatim from my textbook oo
 one year ago

Grazes Group TitleBest ResponseYou've already chosen the best response.0
if you substitute i1 with k, it's right. Mine formula is just so that i can equal the nth term. Your n(th term) would need to be decreased by 1. Just technicalities.
 one year ago

Grazes Group TitleBest ResponseYou've already chosen the best response.0
errr nevermind. I chose a bad example. You just substitute the given values in this one.
 one year ago
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