Reverse the Order of Integration and Then Evaluate the Integral $$\int _ { 0 } ^ { 63 } \int _ { y / 9 } ^ { 7 } \frac { \cos x } { x } d x d y$$

question 27

Multiple Choice

Reverse the order of integration and then evaluate the integral.
- $$\int _ { 0 } ^ { 63 } \int _ { y / 9 } ^ { 7 } \frac { \cos x } { x } d x d y$$

• A) 9 cos 7
• B) 9 sin 7
• C) 7 sin 9
• D) 7 cos 9

---

Definitions:

Impersonal Communication

Communication where the interactions are formal, lack personal involvement, and are often structured, typically found in business or professional settings.

Clarify

To make a statement or situation less confused and more comprehensible.

Vague

Lacking clarity or precision in thought or expression; not clearly expressed or easily understood.

Sender

The individual or entity that initiates a message or communication, intending for it to be received and understood by one or more recipients.