Rewrite the Expression in Terms of Exponentials and Simplify the Results

question 148

Multiple Choice

Rewrite the expression in terms of exponentials and simplify the results.
- $\cosh 9 x - \sinh 9 x$

• A) \(- 9 x\)
• B) \(e ^ { 9 x } - e ^ { - 9 x }\)
• C) \(\mathrm { e } ^ { - 9 \mathrm { x } }\)
• D) \(2 e ^ { - 9 x }\)

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Definitions:

Heart Rate

The count of heart pulsations within a specific time frame, usually measured in beats per minute (BPM).

Sweating

The release of a saline fluid from the body's sweat glands, typically in response to heat, physical exertion, or stress, as a means of regulating body temperature.

Polygraph Examiners

Professionals trained to conduct lie detector tests to assess the truthfulness of a subject's statements.

Polygraph Tests

Lie detector tests that measure physiological responses, like heart rate and sweat production, to questions in an attempt to determine truthfulness, although their accuracy is widely debated.