Mathematica ' s differential equation solving functions can be applied to many different classes of differential equations, automatically selecting the appropriate algorithms ...

There will be times when you want to stop Mathematica in the middle of a computation. You may have asked Mathematica to do something that you did not intend or that is taking ...

AppendTo[s, elem] appends elem to the value of s, and resets s to the result.

Cases[{e_1, e_2, ...}, pattern] gives a list of the e_i that match the pattern. Cases[{e_1, ...}, pattern -> rhs] gives a list of the values of rhs corresponding to the e_i ...

f' represents the derivative of a function f of one argument. Derivative[n_1, n_2, ...][f] is the general form, representing a function obtained from f by differentiating n_1 ...

PrependTo[s, elem] prepends elem to the value of s, and resets s to the result.

QuartileSkewness[list] gives the coefficient of quartile skewness for the elements in list.QuartileSkewness[dist] gives the coefficient of quartile skewness for the symbolic ...

Reap[expr] gives the value of expr together with all expressions to which Sow has been applied during its evaluation. Expressions sown using Sow[e] or Sow[e, tag_i] with ...

SelectionMove[obj, dir, unit] moves the current selection in an open notebook in the front end in the direction dir by the specified unit. SelectionMove[obj, dir, unit, n] ...

Finding elements that match a pattern. This gives the elements of the list which match the pattern x^_. Here is the total number of elements which match the pattern.