Evaluating Sums in Maple 

 

> sum(`+`(`*`(2, `*`(i))), i = 1 .. 5); 1
 

30 (1)
 

> `+`(2, `*`(2, 2), `*`(2, 3), `*`(2, 4), `*`(2, 5)); 1
 

30 (2)
 

> sum(`+`(`*`(2, `*`(k))), k = 1 .. 5); 1
 

30 (3)
 

> sum(`+`(`*`(3, `*`(`^`(i, 2)))), i = 1 .. 7); 1
 

420 (4)
 

> sum(`+`(`*`(3, `*`(`^`(i, 2)))), i = 1 .. 7)
 

420 (5)
 

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