EngineeringForm[expr] prints with all real numbers in expr given in engineering notation. EngineeringForm[expr, n] prints with numbers given to n-digit precision.

ExponentialGeneratingFunction[expr, n, x] gives the exponential generating function in x for the sequence whose n\[Null]^th term is given by the expression ...

GeneratingFunction[expr, n, x] gives the generating function in x for the sequence whose n\[Null]^th series coefficient is given by the expression ...

PermutationProduct[a, b, c] gives the product of permutations a, b, c.

ScientificForm[expr] prints with all real numbers in expr given in scientific notation. ScientificForm[expr, n] prints with numbers given to n-digit precision.

ToDiscreteTimeModel[sys, \[Tau]] gives the discrete-time approximation with sampling period \[Tau] of the continuous-time StateSpaceModel or TransferFunctionModel object ...

When you make a definition in the form f[args]=rhs or f[args]:=rhs, Mathematica associates your definition with the object f. This means, for example, that such definitions ...

The Mathematica function DSolve finds symbolic solutions to differential equations. (The Mathematica function NDSolve, on the other hand, is a general numerical differential ...

To begin, consider an initial value problem for a linear first-order ODE. This is a linear first-order ODE. Notice that the general solution is a linear function of the ...

Special forms for some common symbols. This is equivalent to Sin[60Degree]. Here is the long form of the input.