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material for this homework only a complete assignment will receive...
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![material For this homework only: A complete assignment will receive full credit regardless of correctness. 1. [10 points] Summation formula. Show that Hint: (1-2) Σ r is a telescoping sum i-0 2. [10 points] Integration by parts. Show that 3. [10 points) Finding extrema. Find the global maximum of the function f(z) =-22,2 + 4r-5 How do you know your answer is the global maximum (and not a minimum or only a local maximum)? Hint: Use derivative(s)](https://homework-api-assets-production.s3.ap-southeast-2.amazonaws.com/uploads/store/499397123/1604270612478d6d003e57902770dda7e252a8d48c.png)
