Exponents and Logarithms
Exponential, logarithm, power, and root functions
In addition to common functions like
log, MATLAB® has several other related functions to allow flexible numerical calculations. The
log1p functions compensate for numerical round-off errors in small arguments, while the
realsqrt functions restrict the range of these functions to real numbers.
nthroot calculates roots of any order, while the specialized functions
nextpow2 calculate powers of two.
|Common logarithm (base 10)|
|Compute natural logarithm of |
|Base 2 logarithm and floating-point number dissection|
|Exponent of next higher power of 2|
|Real nth root of real numbers|
|Base 2 exponentiation and scaling of floating-point numbers|
|Natural logarithm for nonnegative real arrays|
|Array power for real-only output|
|Square root for nonnegative real arrays|
- Powers and Exponentials
This topic shows how to compute matrix powers and exponentials using a variety of methods.
- Graphical Comparison of Exponential Functions
This example shows an interesting graphical approach for discovering whether e^pi is greater than pi^e.