2. Evaluate the following summations. a. Ek 42 k=-1 b. 2 4 k k=0 200...

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2. Evaluate the following summations. a. Ek 42 k=-1 b. Σ 2 4 k k=0 200 c. Σ (2 + 3k) 2 k=0 d. Σ 3(1.1) k=0 100 k (Hint: you can use the closed form for geometric sequence and arithmetic sequence) 2. Evaluate the following summations. a. Ek 42 k=-1 b. Σ 2 4 k k=0 200 c. Σ (2 + 3k) 2 k=0 d. Σ 3(1.1) k=0 100 k (Hint: you can use the closed form for geometric sequence and arithmetic sequence)