SOLUTION: given f(x) = ln x, evaluate f(e^-5)

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Question 926340: given f(x) = ln x, evaluate
f(e^-5)
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

given f%28x%29+=+ln+%28x%29, evaluate
f%28e%5E-5%29
f%28e%5E-5%29+=+ln+%28e%5E-5%29
f%28e%5E-5%29+=+ln+%281%2Fe%5E5%29
f%28e%5E-5%29+=+ln+%281%29-ln%28e%5E5%29
f%28e%5E-5%29+=+ln+%281%29-5ln%28e%29
f%28e%5E-5%29+=+ln+%281%29-5ln%28e%29... ln+%281%29=0 and ln+%28e%29=1
f%28e%5E-5%29+=+0-5%2A1
f%28e%5E-5%29+=+-5