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How to express each sum using summation notation? (1) $\sqrt{1}$ $sqrt1$ + $\sqrt{2}$ $sqrt2$ + $\sqrt{3}$ $sqrt3$ + $\sqrt{4}$ $sqrt4$ (2) $- \frac{1}{2}$ $-1/2$ + $1 - \frac{3}{2}$ $1-3/2$ + $2 - \frac{5}{2}$ $2-5/2$ +3

1 Answer

Jun 22, 2018

See explanation

Explanation:

$sqrt(1)+sqrt(2)+sqrt(3)+sqrt(4)=Sigma_{i=1}^{i=4}sqrt(i)$

$-1/2+1-3/2+2-5/2+3=Sigma_{i=1}^{i=6}(-1)^i*i/2$

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