3 sigma k=1 k^2/2k jadinya berapa?

By Admin ReiPosted on December 8, 2022

3 sigma k=1 k^2/2k jadinya berapa?

$displaystyle sum_{k=1}^3 frac{k^2}{2k} \ = frac{1}{2}cdotsum_{k=1}^3 k \ = frac{1}{2}cdotleft(1+2+3right) \ = frac{1}{2}cdot(6) \ = 3$

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