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April 16th, 2012, 08:05 AM  #1 
Senior Member Joined: Apr 2012 Posts: 112 Thanks: 0  Binomial theorem
Hello! I have questions on the binomial theorem. I thought they looked alright and attempted them, only to find that I could not solve them, or my answers are wrong... 1.) Find the value of n if the coefficient of x^3 in the expansion of (2+3x)^n is twice the coefficient of x^2. 2.) In the binomial expansion of (1+(1/3))^n in ascending powers of 1/3, the fourth and fifth terms are equal. Find the value of n. 
April 16th, 2012, 08:34 AM  #2 
Senior Member Joined: Jul 2010 From: St. Augustine, FL., U.S.A.'s oldest city Posts: 12,211 Thanks: 521 Math Focus: Calculus/ODEs  Re: Binomial theorem
1.) We may state: 2.) We may state: 

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