the exponential function
algebraic expression or array
The exponential function, exp(x), calculates the value of e to the power of x, where e is the base of the natural logarithm, 2.718281828... .
By default, exp(x) will evaluate only when the result is an exact value, or when the input x is a floating-point number. When x is a symbolic expression it will remain in function form so that it can be manipulated symbolically or as part of a larger expression.
If x is an array, the result is an element-wise mapping over x.
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