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HeavisideLambda   (Built-in Mathematica Symbol)
HeavisideLambda[x] represents the triangle distribution \[CapitalLambda](x) which is nonzero for |x| < 1.HeavisideLambda[x_1, x_2, ...] represents the multidimensional ...
HeavisidePi   (Built-in Mathematica Symbol)
HeavisidePi[x] represents the box distribution \[CapitalPi](x), equal to 1 for |x| < 1/2 and 0 for |x| > 1/2.HeavisidePi[x_1, x_2, ...] represents the multidimensional box ...
KroneckerSymbol   (Built-in Mathematica Symbol)
KroneckerSymbol[n, m] gives the Kronecker symbol (n/m).
Together   (Built-in Mathematica Symbol)
Together[expr] puts terms in a sum over a common denominator, and cancels factors in the result.
TrigReduce   (Built-in Mathematica Symbol)
TrigReduce[expr] rewrites products and powers of trigonometric functions in expr in terms of trigonometric functions with combined arguments.
Line Search Methods   (Mathematica Tutorial)
A method like "Newton's" method chooses a step, but the validity of that step only goes as far as the Newton quadratic model for the function really reflects the function. ...
Newton's Method   (Mathematica Tutorial)
One significant advantage Mathematica provides is that it can symbolically compute derivatives. This means that when you specify Method->"Newton" and the function is ...
Refine   (Built-in Mathematica Symbol)
Refine[expr, assum] gives the form of expr that would be obtained if symbols in it were replaced by explicit numerical expressions satisfying the assumptions assum. ...
Approximate Functions and Interpolation   (Mathematica Tutorial)
In many kinds of numerical computations, it is convenient to introduce approximate functions. Approximate functions can be thought of as generalizations of ordinary ...
Quantile   (Built-in Mathematica Symbol)
Quantile[list, q] gives the q\[Null]\[Null]^th quantile of list. Quantile[list, {q_1, q_2, ...}] gives a list of quantiles q_1, q_2, .... Quantile[list, q, {{a, b}, {c, d}}] ...
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