![]() The elements of the Q column are calculated by dividing the values from column P by the value from the column corresponding to the variable that is entered in the basis: The number of variables in the basis is always constant, so it is necessary to choose which variable to derive from the basis, for which we calculate Q. Therefore, in the basis we introduce the variable with the smallest negative estimate. Since there are negative values among the estimates of the controlled variables, the current table does not yet have an optimal solution. If there are no basis variables in some restriction, then we add them artificially, and artificial variables enter the objective function with the coefficient -M if the objective function tends to max and M, if the objective function tends to min. The basic is a variable that has a coefficient of 1 with it and is found only in one constraint. Each constraint must have one basis variable. Now in the constraint system it is necessary to find a sufficient number of basis variables. Compensating variables are included in the objective function of the problem with a zero coefficient. If an inequality of the form ≤, then the compensating variable has the sign +, if the inequality of the form ≥, then the compensating variable has the sign. Next, you need to get rid of inequalities, for which we introduce compensating variables in the left-hand side of the inequalities. After this manipulation, the sign of inequality is reversed. For what the corresponding restrictions are multiplied by -1. The copy-paste of the page "Extremum of a Function" or any of its results, is allowed as long as you cite dCode!Ĭite as source (bibliography): Extremum of a Function on dCode.The preliminary stage begins with the need to get rid of negative values (if any) in the right part of the restrictions. Except explicit open source licence (indicated Creative Commons / free), the "Extremum of a Function" algorithm, the applet or snippet (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, translator), or the "Extremum of a Function" functions (calculate, convert, solve, decrypt / encrypt, decipher / cipher, decode / encode, translate) written in any informatic language (Python, Java, PHP, C#, Javascript, Matlab, etc.) and all data download, script, or API access for "Extremum of a Function" are not public, same for offline use on PC, mobile, tablet, iPhone or Android app! Ask a new question Source codeĭCode retains ownership of the "Extremum of a Function" source code. ![]() Extrema is the plural form of extremum (from latin, meaning Extremity).
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