how to do basic linear equations

Objective Function - The Objective Function is a linear function of variables which is to be optimised i.e., maximised or minimised. e.g., profit function, cost function etc. The objective function may be expressed as a linear expressio..

Conclusion - The graphical method of solving an LPP is possible only if there are two decision variables (say x and y). This method is not suitable if there are three or more decision variables. In this case, there is a powerful method called 'simplex method'. The wide usage of liner programming he..

A basic salt may also be formed by the partial replacement of the hydroxyl groups of a diacidic or triacidic base, by an acid radical. Basic salts are stronger in their basic nature and show a pH greater than ..

A basic salt is formed when there is a higher proportion of the base in the reaction between an acid with a base, than is necessary for the formation of a normal salt. Example: Basic copper carbonate CuCO 3 .Cu(OH) 2 Basic lead carbonate (white lead) PbCO 3 .Pb(OH)..

All these hydrides have one lone pair of electrons on their central atom. Therefore, they act as Lewis bases. They can donate an electron pair to electron deficient species (Lewis acids). Down the group, the basic character of the hydrides decreases. For e.g., NH 3 is distinctly ba..

Absolutely dry ammonia or pure liquefied ammonia is neutral. In the presence of water however, it forms ammonium hydroxide, which yields hydroxyl ions. As a result of this reaction, it exhibits basic nature. It is a weak base and is perhaps the only gas that is alkaline in nature. ..

Ohm's law The potential difference across the conductor is directly proportional to the current flowing through it. Solutions obey Ohm's law like metallic conductor..

Notation: Usually a polynomial is denoted by P(x) and if k is any number then P(k) denotes the value of P(x) at x=k. The degree of a polynomial: If a o ? 0, then the polynomial P(x) or f(x) is of degree 'n' i.e., it is the highest power of the variable x in the rational and integ..

Ohm's law - The potential difference across the conductor is directly proportional to the current flowing through it. Solutions obey Ohm's law like metallic conductor..

Polynomials - An expression of the form in which a i are numbers belonging to some number system and 'n' is a non-negative integer, is called a polynomial. a i are called the coefficients of if a o 0, the polynomial is said to be of degree ..