Exists
(Built-in Mathematica Symbol) Exists[x, expr] represents the statement that there exists a value of x for which expr is True. Exists[x, cond, expr] states that there exists an x satisfying the condition ...
The main equations that Solve and related Mathematica functions deal with are polynomial equations. It is easy to solve a linear equation in x. One can also solve quadratic ...
Exact global optimization problems can be solved exactly using Minimize and Maximize. This computes the radius of the circle, centered at the origin, circumscribed about the ...
ConditionalExpression[expr, cond] is a symbolic construct that represents the expression expr when the condition cond is True.
CanberraDistance[u, v] gives the Canberra distance between vectors u and v.
ChessboardDistance[u, v] gives the chessboard, Chebyshev, or sup norm distance between vectors u and v.
Equal
(Built-in Mathematica Symbol) lhs == rhs returns True if lhs and rhs are identical.
FactorTerms[poly] pulls out any overall numerical factor in poly. FactorTerms[poly, x] pulls out any overall factor in poly that does not depend on x. FactorTerms[poly, {x_1, ...
HarmonicMean[list] gives the harmonic mean of the values in list.
Not
(Built-in Mathematica Symbol) ! expr is the logical NOT function. It gives False if expr is True, and True if it is False.