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  2. Method of undetermined coefficients - Wikipedia

    en.wikipedia.org/wiki/Method_of_undetermined...

    g(x) is a constant, a polynomial function, exponential function , sine or cosine functions ⁡ or ⁡, or finite sums and products of these functions (, constants). The method consists of finding the general homogeneous solution y c {\displaystyle y_{c}} for the complementary linear homogeneous differential equation

  3. Equating coefficients - Wikipedia

    en.wikipedia.org/wiki/Equating_coefficients

    In mathematics, the method of equating the coefficients is a way of solving a functional equation of two expressions such as polynomials for a number of unknown parameters. It relies on the fact that two expressions are identical precisely when corresponding coefficients are equal for each different type of term.

  4. Equation solving - Wikipedia

    en.wikipedia.org/wiki/Equation_solving

    An example of using Newton–Raphson method to solve numerically the equation f(x) = 0. 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.

  5. Lambert W function - Wikipedia

    en.wikipedia.org/wiki/Lambert_W_function

    The Lambert W function is used to solve equations in which the unknown quantity occurs both in the base and in the exponent, or both inside and outside of a logarithm. The strategy is to convert such an equation into one of the form ze z = w and then to solve for z using the W function. For example, the equation = +

  6. Cramer's rule - Wikipedia

    en.wikipedia.org/wiki/Cramer's_rule

    In linear algebra, Cramer's rule is an explicit formula for the solution of a system of linear equations with as many equations as unknowns, valid whenever the system has a unique solution. It expresses the solution in terms of the determinants of the (square) coefficient matrix and of matrices obtained from it by replacing one column by the ...

  7. Underdetermined system - Wikipedia

    en.wikipedia.org/wiki/Underdetermined_system

    Each unknown can be seen as an available degree of freedom. Each equation introduced into the system can be viewed as a constraint that restricts one degree of freedom. Therefore, the critical case (between overdetermined and underdetermined) occurs when the number of equations and the number of free variables are equal.

  8. Overdetermined system - Wikipedia

    en.wikipedia.org/wiki/Overdetermined_system

    Each unknown can be seen as an available degree of freedom. Each equation introduced into the system can be viewed as a constraint that restricts one degree of freedom. Therefore, the critical case occurs when the number of equations and the number of free variables are equal.

  9. Formula editor - Wikipedia

    en.wikipedia.org/wiki/Formula_editor

    WebEQ Equation Editor: Yes Yes No No Yes Yes No No Web A Design Science product that has reached End of Life; replaced with MathFlow Software Development Kit No Equation Maker for Mac: Yes No No Yes No No No Mac Available on Mac App Store PDF, PNG No Equation Notepad for Android: Yes Yes No No No Yes Yes No For the Android mobile operating system.