Determine the Largest Interval on Which the Function $f ( x ) = x + \frac { 1 } { x }$

question 218

Multiple Choice

Determine the largest interval on which the function $f ( x ) = x + \frac { 1 } { x }$ concave upward?

• A) \(( - 1,0 )\)

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Definitions:

Green Algae

Photosynthetic, aquatic organisms in the Chlorophyta division, considered the ancestors of land plants.

Representative Clade

A group of organisms that consists of a common ancestor and all its lineal descendants, representing a single branch on the tree of life.

Supergroup

A high-level taxonomic rank in the classification of organisms, above kingdom, proposed to accommodate the phylogenetic relationships.

Forams

are short for foraminifera, a large group of amoeboid protists with calcareous shells, used in geological dating and paleoclimate estimation.