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MATHalino's philosophy, I may say, is that our contents must be accessible to all. Whether you are logged in or not, you can still access all our contents without any constraint. We already done this last year to our Courses and Exams, and this year we extend it to downloads.
 

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Derivation of Product of First n Terms of Geometric Progression

The product of the first n terms of a Geometric Progression is given by the following:
 

Given the first term a_1 and last term a_n:

P_n = \sqrt{(a_1 \times a_n)^n}

 

Given the first term a_1 and the common ratio r

P_n = {a_1}^n \times r^{n(n - 1)/2}