InverseFunction[f] represents the inverse of the function f, defined so that InverseFunction[f][y] gives the value of x for which f[x] is equal to y. InverseFunction[f, n, ...
DateListPlot[{{date_1, v_1}, {date_2, v_2}, ...}] plots points with values v i at a sequence of dates.DateListPlot[{v_1, v_2, ...}, datespec] plots points with dates at equal ...
NearestFunction[data] represents a function whose values give the elements closest to an element that is supplied.
CounterFunction is an option for counters that specifies the symbols used to display the value of the counter.
VectorColorFunction is an option for VectorPlot and related functions which specifies a function to apply to determine colors of field vectors drawn.
ExponentFunction is an option for NumberForm and related functions that determines the exponent to use in printing approximate real numbers.
DistanceFunction is an option for functions such as Nearest that specifies the distance value to assume between any two specified points.
MultilineFunction is an option for UnderscriptBox and related box objects that specifies what to do when the contents of a box object are too long to fit on one line.
Using a host of original algorithms developed at Wolfram Research, Mathematica provides powerful functions that automate the process of creating cognitively and aesthetically ...
TransferFunctionPoles[tf] gives a matrix of roots of the denominators in the TransferFunctionModel object tf.