Logarithms and Exponents
Introduction
To deal with derivatives and integrals of logs and exponents, you must learn and obey the following rules. Practice is the best way to improve.
ln = the natural log is a log with base ![]()
is saying that
it is approximately 2.718281828
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assuming ![]()
ln of a negative number is impossible as you can’t raise e (or any positive number) to a number and get a negative or 0 resultant.
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assuming ![]()
is the area under the curve ![]()
Algebra Properties of logs:
and ![]()
e and ln being inverses, note ![]()
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multiplication in logs becomes addition
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exponents in logs becomes a coefficient
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a negative exponent is a negative coefficient
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division in logs becomes subtraction
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e and ln are inverses
For example, find x if
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