February 11th, 2019, 09:04 AM  #1 
Newbie Joined: Feb 2019 From: Leicester Posts: 1 Thanks: 0  **Need Help for this Assignment**
Hello Sir/Madam, I have been given this question as an assignment to complete and have no clue on how to complete this question at all. Please try help as it's due in tomorrow so much help as possible will be greatly appreciated. I have attached the assignment question with this post. Good luck and best regards, Lilshrekboye29 
February 11th, 2019, 11:59 AM  #2 
Global Moderator Joined: Dec 2006 Posts: 20,298 Thanks: 1971 
By differentiating both sides of the given equation, $n(1 + x)^{n1} = p_1 + 2p_2x + 3p_3x^2\,+\,......\,+\: np_nx^{n1}$. For $n > 1$, substituting $x = 1$ gives $0 = p_1  2p_2 + 3p_3\,\,......\,+\: np_n(1)^{n1}$. For $n = 1$, the above sum reduces to $p_1$, which is 1. For part (b), differentiate a second time, then substitute $x = 1$. If you want your work to be checked, post it here. Last edited by skipjack; February 11th, 2019 at 11:34 PM. 
February 11th, 2019, 02:01 PM  #3 
Senior Member Joined: Dec 2015 From: iPhone Posts: 387 Thanks: 61 
Try to set the coefficients equally.


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algebra, assignment, calculas, differentaition 
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