Evaluate the Improper Integral Whenever It Is Convergent $\int _ { 3 } ^ { \infty } e ^ { - x / 2 } d x$

question 12

Multiple Choice

Evaluate the improper integral whenever it is convergent. If it is divergent, state this.
- $\int _ { 3 } ^ { \infty } e ^ { - x / 2 } d x$

• A) divergent
• B) \(\mathrm { e } ^ { - 1 }\)
• C) 2 \(e ^ { - 3 / 2 }\)
• D) \(e ^ { - 3 / 2 }\)
• E) none of these

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