Unitary Method and Variation
The unitary method is a technique in elementary algebra for solving a class of problems in variation. It consists of altering one of the variables to a single unit, i.e. 1, and then performing the operation necessary to alter it to the desired value.
Summary
The unitary method is a technique in elementary algebra for solving a class of problems in variation. It consists of altering one of the variables to a single unit, i.e. 1, and then performing the operation necessary to alter it to the desired value.
Things to Remember
- The Unitary Method provides an alternative approach to solving problems.
- Percentages and simple percentage problems would normally precede the unitary method approach.
- Ratio calculations are an aspect of the unitary method.
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Unitary Method and Variation
Unitary Method
The unitary method is a method, in which the value of a quantity is first obtained to find the value of any required quantity.
There are two types of variation while solving the problem of unitary method. They are
- Direct variation
- Inverse variation
Direct Variation
When the increase or decrease in the value of one quantity causes the increase or decrease in the value of other quantity than they are said to be direct variation. For example, the cost of goods varies directly to the numbers of goods. More good, more cost. Less good, less cost.
Inverse Variation
When the increase or decrease in the value of one quantity causes the decrease or increase in the value of other quantity then they are said to be inverse variation. For example, time and work. More time consumes to complete a piece of work with less number of men's.
Lesson
Unitary Method
Subject
Compulsory Maths
Grade
Grade 8
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