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Engineering Mathematics

The most modern aid to calculations is the pocket-sized electronic calculator. With one of these, calculations can be quickly and accurately performed, correct to about 9 significant figures. The scientific type of calcu- lator has made the use of tables and logarithms largely redundant.

To help you to become competent at using your cal- culator check that you agree with the answers to the following problems:

Algebra is that part of mathematics in which the rela- tions and properties of numbers are investigated by means of general symbols. For example, the area of a rectangle is found by multiplying the length by the breadth; this is expressed algebraically as A = l × b, where A represents the area, l the length and b the breadth.

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