Constant is an attribute that indicates zero derivative of a symbol with respect to all parameters.
Dt
(Built-in Mathematica Symbol) Dt[f, x] gives the total derivative d f/d x. Dt[f] gives the total differential d f. Dt[f, {x, n}] gives the multiple derivative d^n f/d x^n. Dt[f, x_1, x_2, ...] gives d/d ...
$RecursionLimit gives the current limit on the number of levels of recursion that Mathematica can use.
In many computations you are concerned only with the final result of evaluating the expression given as input. But sometimes you also want to collect expressions that were ...
KernelLink -- communicate with a Mathematica kernel, MathLink -- low-level methods for communicating with any MathLink program, MathLinkFactory -- create links, ...
The basis for a nonlinear conjugate gradient method is to effectively apply the linear conjugate gradient method, where the residual is replaced by the gradient. A model ...
OpenCLLink allows Mathematica to use the OpenCL parallel computing language. It contains functions that facilitate loading user-defined OpenCL functions into Mathematica. ...
Sign
(Built-in Mathematica Symbol) Sign[x] gives -1, 0, or 1 depending on whether x is negative, zero, or positive.
Plus
(Built-in Mathematica Symbol) x + y + z represents a sum of terms.
The function NDSolve discussed in "Numerical Differential Equations" allows you to find numerical solutions to differential equations. NDSolve handles both single ...