Compute
e^x
for each element of x. To compute the matrix exponential, see Linear Algebra.See also: log.
Compute
exp (
x) - 1
accurately in the neighborhood of zero.See also: exp.
Compute the natural logarithm,
ln (
x)
, for each element of x. To compute the matrix logarithm, see Linear Algebra.
Compute the base-2 logarithm of each element of x.
If called with two output arguments, split x into binary mantissa and exponent so that
1/2 <= abs(f) < 1
and e is an integer. Ifx = 0
,f = e = 0
.
If x is a scalar, return the first integer n such that 2^n >= abs (x).
If x is a vector, return
nextpow2 (length (
x))
.
Compute the n-th root of x, returning real results for real components of x. For example
nthroot (-1, 3) => -1 (-1) ^ (1 / 3) => 0.50000 - 0.86603i
With one argument, computes 2 .^ x for each element of x.
With two arguments, returns f .* (2 .^ e).
Return the real-valued natural logarithm of each element of x. Report an error if any element results in a complex return value.
Compute the real-valued, element-by-element power operator. This is equivalent to x
.^
y, except thatrealpow
reports an error if any return value is complex.
Return the real-valued square root of each element of x. Report an error if any element results in a complex return value.
Compute the square root of each element of x. If x is negative, a complex result is returned. To compute the matrix square root, see Linear Algebra.
See also: realsqrt.