In order to write the most general Mathematica programs you will sometimes need to find out global information about the setup under which your program is being run. Thus, ...

 

ArcCsc[z] gives the arc cosecant csc -1 (z) of the complex number z.

ArcSec[z] gives the arc secant sec -1 (z) of the complex number z.

ArcSinh[z] gives the inverse hyperbolic sine sinh -1 (z) of the complex number z.

Mathematica represents vectors as lists, and never needs to distinguish between row and column cases. Vectors in Mathematica can always mix numbers and arbitrary symbolic or ...

ArcTan[z] gives the arc tangent tan -1 (z) of the complex number z. ArcTan[x, y] gives the arc tangent of y/x, taking into account which quadrant the point (x, y) is in.

As discussed in "Exact and Approximate Results", Mathematica can handle approximate real numbers with any number of digits. In general, the precision of an approximate real ...

IsotopeData[{Z, A}, " property"] gives the value of the specified property for the isotope with atomic number Z and mass number A.IsotopeData["name", " property"] gives the ...

ArcCosh[z] gives the inverse hyperbolic cosine cosh -1 (z) of the complex number z.