Let $f ( x ) = e ^ { - 1 / x }$

question 35

Multiple Choice

Let $f ( x ) = e ^ { - 1 / x }$ Find the value of $f ^ { \prime } ( 1 )$

• A)2e
• B)e
• C) \(2 e ^ { - 1 }\)
• D) \(- 2 e\)
• E) \(e ^ { - 1 }\)
• F) \(- e\)
• G) \(- 2 e ^ { - 1 }\)
• H) \(- e ^ { - 1 }\)

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Definitions:

Arachnoid Granulations

Small protrusions of the arachnoid membrane through the dura mater; they allow cerebrospinal fluid to enter the venous system.

Blood-brain Barrier

The blood-brain barrier is a selective barrier that prevents most substances in the blood from entering the brain, protecting it from pathogens and toxins.

Myelin Sheath

Envelope surrounding most axons; formed by Schwann cell membranes being wrapped around the axon.

Circle of Willis

A circular network of arteries at the base of the brain that supplies blood to the brain and surrounding structures.