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Mathematics is fundamental to science, with applications in nearly everything around you: from weather prediction to medicine, video games, banking, construction, and public transport and much, much more. See some examples of how maths is used in your discipline.

## BIOLOGY

 Proportions and ratios A serial dilution is a series of simple dilutions which amplifies the dilution factor quickly. The source of dilution material for each step comes from the diluted material of the previous step. Serial dilution is used in biology, medicine, and the food industry to reduce the concentration of microorganisms or chemicals, or to measure the alcohol concentration. Exponential function Doctors routinely have to consider how long a medicine will stay in a patient’s body.  This will determine how often the patient needs to take their medication and for how long, in order to keep enough medicine in the patient’s body to work effectively, but without overdosing. The amount of medicine in the body after taking a medication decreases exponentially over time and this is where the exponential function is indispensable.

## ENGINEERING

 Parabolas everywhere! The parabola is a beautiful and elegant curve. The shape of a parabola is useful in a wide range of real world applications: cables on suspension bridges, flight of a projectile, design of mirrors/ torches, satellite dishes, and much more. One equation – many realms! It is fascinating how the same mathematical framework can describe phenomena and processes of very different nature, in diverse fields of science and engineering. Here, the same type of a differential equation models the behaviour of suspension in a car, a door damper, buckling of structural beams/columns, current in an electric circuit, a process in a chemical reactor, and many more seemingly unrelated quantities.