Section: Mathematical Functions
exp function for its argument. The general
syntax for its use is
y = exp(x)
where x is an n-dimensional array of numerical type.
Integer types are promoted to the double type prior to
calculation of the exp function. Output y is of the
same size and type as the input x, (unless x is an
integer, in which case y is a double type).
exp function is defined for all real
valued arguments x as
where
and is approximately 2.718281828459045 (returned by the function
e). For complex values
z, the famous Euler formula is used to calculate the
exponential
exp
function over the interval [-1,1]:
--> x = linspace(-1,1); --> plot(x,exp(x))
In the second example, we plot the unit circle in the
complex plane e^{i 2 pi x} for x in [-1,1].
--> x = linspace(-1,1); --> plot(exp(-i*x*2*pi))