Express the Sum Using Summation Notation $$\frac { 1 } { w } + \frac { s } { 2 w } + \frac { s ^ { 2 } } { 3 w } + \ldots + \frac { s ^ { n - 1 } } { n w }$$

question 205

Multiple Choice

Express the sum using summation notation.
- $$\frac { 1 } { w } + \frac { s } { 2 w } + \frac { s ^ { 2 } } { 3 w } + \ldots + \frac { s ^ { n - 1 } } { n w }$$

• A) \(\sum _ { k = 1 } ^ { n } \frac { s ^ { k } } { k w }\)
• B) \(\sum _ { k = 1 } ^ { n } \frac { s ^ { k - 1 } } { k w }\)
• C) \(\sum _ { k = 0 } ^ { n } \frac { < b > k } { k w }\)
• D) \(\sum _ { k = 0 } ^ { n } \frac { s ^ { k - 1 } } { k w }\)

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Definitions:

Independent Variable

An element or factor in an experiment that is deliberately manipulated to observe its effect on the dependent variable.

Dependent Variable

In an experiment, the variable that is being tested and measured, expected to change as a result of manipulations to the independent variable.

Experimental Group

In a scientific study, the group of participants exposed to the independent variable, allowing researchers to determine its effect on a dependent variable.

Stress

The body's response to any demand or challenge, which can be physical, emotional, or mental.