Find the Domain of the Vector Function $\mathbf { r } ( t ) = \left\langle 8 \sqrt { t } , \frac { 1 } { t - 9 } , \ln t \right\rangle$

question 43

Multiple Choice

Find the domain of the vector function $\mathbf { r } ( t ) = \left\langle 8 \sqrt { t } , \frac { 1 } { t - 9 } , \ln t \right\rangle$

• A) \(( 0,9 ) \cup ( 9 , \infty )\)
• B) \([ 0,8 ) \cup ( 8,9 ) \cup ( 9 , \infty )\)
• C) \(( 0,8 ) \cup ( 8 , \infty )\)
• D) \(( 0,8 ) \cup ( 8,9 ) \cup ( 9 , \infty )\)

---

Definitions:

Ideation

The innovative procedure of producing, evolving, and sharing novel concepts.

Implementation

A process involving the testing of assumptions of new ideas to continuously shape them into viable opportunities.

AEIOU Framework

Acronym for Activities, Environments, Interactions, Objects, and Users—a framework commonly used to categorize observations during fieldwork.

Laboratory-Based Research

A type of research conducted in controlled environments or dedicated facilities focusing on scientific experiments.