Formulae is one of the plurals for formula. There are many formulas in mathematics. For example, the formula for the area of a rectangle is length x width. You use it by plugging in numbers. If the length is 7 units and the width is 5 units, the area is 35 square units
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There is no single mathematical formula and no single inventor. Furthermore, there are sometimes different (though equivalent) formulaefor the same calculation.
Mainly, many magnitudes are related through different kinds of formulae. In advanced science you may have to derive your own formulae, but in more basic science, you just use existing formulae.Mainly, many magnitudes are related through different kinds of formulae. In advanced science you may have to derive your own formulae, but in more basic science, you just use existing formulae.Mainly, many magnitudes are related through different kinds of formulae. In advanced science you may have to derive your own formulae, but in more basic science, you just use existing formulae.Mainly, many magnitudes are related through different kinds of formulae. In advanced science you may have to derive your own formulae, but in more basic science, you just use existing formulae.
For the same reasons that we need to use maths today.
The same reason that people of other countries use maths.
good maths =)