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  2. System of linear equations - Wikipedia

    en.wikipedia.org/wiki/System_of_linear_equations

    Here z is the free variable, while x and y are dependent on z. Any point in the solution set can be obtained by first choosing a value for z, and then computing the corresponding values for x and y. Each free variable gives the solution space one degree of freedom, the number of which is equal to the dimension of the solution set.

  3. Linear equation - Wikipedia

    en.wikipedia.org/wiki/Linear_equation

    The n-tuples that are solutions of a linear equation in n variables are the Cartesian coordinates of the points of an (n − 1)-dimensional hyperplane in an n-dimensional Euclidean space (or affine space if the coefficients are complex numbers or belong to any field). In the case of three variables, this hyperplane is a plane.

  4. Linear algebra - Wikipedia

    en.wikipedia.org/wiki/Linear_algebra

    In multilinear algebra, one considers multivariable linear transformations, that is, mappings that are linear in each of a number of different variables. This line of inquiry naturally leads to the idea of the dual space , the vector space V* consisting of linear maps f : V → F where F is the field of scalars.

  5. Line chart - Wikipedia

    en.wikipedia.org/wiki/Line_chart

    Line chart showing the population of the town of Pushkin, Saint Petersburg from 1800 to 2010, measured at various intervals. A line chart or line graph, also known as curve chart, [1] is a type of chart that displays information as a series of data points called 'markers' connected by straight line segments. [2]

  6. Linear programming - Wikipedia

    en.wikipedia.org/wiki/Linear_programming

    If all of the unknown variables are required to be integers, then the problem is called an integer programming (IP) or integer linear programming (ILP) problem. In contrast to linear programming, which can be solved efficiently in the worst case, integer programming problems are in many practical situations (those with bounded variables) NP-hard.

  7. G7 renews support for Ukraine, condemns Russian 'escalation'

    www.aol.com/news/g7-renews-support-ukraine...

    FIUGGI, Italy (Reuters) -Foreign ministers from the Group of Seven democracies on Tuesday expressed their support for Ukraine and condemned what they described as Russia's "irresponsible and ...

  8. Linear least squares - Wikipedia

    en.wikipedia.org/wiki/Linear_least_squares

    Linear least squares (LLS) is the least squares approximation of linear functions to data. It is a set of formulations for solving statistical problems involved in linear regression, including variants for ordinary (unweighted), weighted, and generalized (correlated) residuals.

  9. Una nueva época

    images.huffingtonpost.com/2012-10-11-Capitulo6...

    Emilio&Ontiveros Mauro&F.&Guillén Una&nueva&época Los&grandes&retos&del&sigloXXI Traducciónde JulioViñuelaDíaz& & & & & & & & & & & & & & & & & & & & & & & & &