Question

k=1 4. ...

Find the sum, use the summation capabilities of a graphing utility to verify your result.

Transcribed: 5. C k=1

To find the sum $\sum _{k=1}^{4}c$

$\begin{array}{rcl}\sum _{k=1}^{4}c& =& c+c+c+c\\ \sum _{k=1}^{4}c& =& 4c\end{array}$

Using graphing utility

Area of rectangle is

$\begin{array}{rcl}A& =& 4×c\\ A& =& 4c\end{array}$

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