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  2. Chebyshev nodes - Wikipedia

    en.wikipedia.org/wiki/Chebyshev_nodes

    For both kinds of nodes, we first plot the points equi-distant on the upper half unit circle in blue. Then the blue points are projected down to the x-axis. The projected points, in red, are the Chebyshev nodes. In numerical analysis, Chebyshev nodes are a set of specific real algebraic numbers, used as nodes for polynomial interpolation.

  3. Underdetermined system - Wikipedia

    en.wikipedia.org/wiki/Underdetermined_system

    If an underdetermined system of t equations in n variables (t < n) has solutions, then the set of all complex solutions is an algebraic set of dimension at least n - t. If the underdetermined system is chosen at random the dimension is equal to n - t with probability one.

  4. Equation solving - Wikipedia

    en.wikipedia.org/wiki/Equation_solving

    In mathematics, to solve an equation is to find its solutions, which are the values (numbers, functions, sets, etc.) that fulfill the condition stated by the equation, consisting generally of two expressions related by an equals sign. When seeking a solution, one or more variables are designated as unknowns. A solution is an assignment of ...

  5. Expected value - Wikipedia

    en.wikipedia.org/wiki/Expected_value

    Since the outcomes of a random variable have no naturally given order, this creates a difficulty in defining expected value precisely. For this reason, many mathematical textbooks only consider the case that the infinite sum given above converges absolutely , which implies that the infinite sum is a finite number independent of the ordering of ...

  6. Polynomial interpolation - Wikipedia

    en.wikipedia.org/wiki/Polynomial_interpolation

    One may easily find points along W(x) at small values of x, and interpolation based on those points will yield the terms of W(x) and the specific product ab. As fomulated in Karatsuba multiplication, this technique is substantially faster than quadratic multiplication, even for modest-sized inputs, especially on parallel hardware.

  7. Savings interest rates today: Get in front of the Fed's next ...

    www.aol.com/finance/savings-interest-rates-today...

    At the end of the same three years, you'd have earned $927.27 in interest for a total of $10,927.27 in your account — and that's without additional contributions to that initial $10,000.

  8. Equation - Wikipedia

    en.wikipedia.org/wiki/Equation

    A parametric equation is an equation in which the solutions for the variables are expressed as functions of some other variables, called parameters appearing in the equations; A functional equation is an equation in which the unknowns are functions rather than simple quantities; Equations involving derivatives, integrals and finite differences:

  9. Savings interest rates today: Beat the Fed's next move with ...

    www.aol.com/finance/savings-interest-rates-today...

    At the end of the same three years, you'd have earned $927.27 in interest for a total of $10,927.27 in your account — and that's without additional contributions to that initial $10,000.