Oncology & Cancer

Accurate assessment of heart rhythm can optimize chemotherapy use

Using the wrong mathematical formula to assess heartbeat rhythms may lead oncologists to inappropriately stop life-saving chemotherapy, according to research findings from UNC Lineberger Comprehensive Cancer Center scientists. ...

Pediatrics

FDA concedes delays in response to baby formula shortage

The Food and Drug Administration acknowledged Tuesday that its response to the U.S. infant formula shortage was slowed by delays in processing a whistleblower complaint and test samples from the nation's largest formula factory.

Pediatrics

Formula milk marketing disrupts breastfeeding goals

Formula milk companies continue to defy international regulations and target health centers to market their products, a WHO study on formula marketing and its impact on breastfeeding shows.

Pediatrics

Troubled infant formula plant resumes production

Abbott Inc. has announced that it has resumed production at its infant formula plant, following a February shutdown over contamination concerns that triggered a months-long shortage of infant formula.

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Formula

In mathematics, a formula (plural: formulae or formulas) is an entity constructed using the symbols and formation rules of a given logical language.

In science, a formula is a concise way of expressing information symbolically (as in a mathematical or chemical formula), or a general relationship between quantities. Colloquial use of the term in mathematics often refers to a similar construct.

Such formulae are the key to solving an equation with variables. For example, determining the volume of a sphere requires a significant amount of integral calculus; but, having done this once, mathematicians can produce a formula to describe the volume in terms of some other parameter (the radius for example). This particular formula is:

Having obtained this result, and knowing the radius of the sphere in question, we can quickly and easily determine its volume. Note that the quantities V, the volume, and r the radius are expressed as single letters. This convention, while less important in a relatively simple formula, means that mathematicians can more quickly manipulate larger and more complex formulae.

Expressions are distinct from formulae in that they cannot contain an equals sign; whereas formulae are comparable to sentences, expressions are more like phrases.

In a general context, formulae are applied to provide a mathematical solution for real world problems. Some may be general: F = ma, which is one expression of Newton's second law, is applicable to a wide range of physical situations. Other formulae may be specially created to solve a particular problem; for example, using the equation of a sine curve to model the movement of the tides in a bay. In all cases however, formulae form the basis for all calculations.

This text uses material from Wikipedia, licensed under CC BY-SA