Applications of linear equations in real life:
- Pharmaceutical research: Measurements of the effect of a new drug might show a roughly linear relationship between drug dose and survival time. You would want to best-fit a straight line to the measurements for use in clinical application.
- Automotive design: Car suspensions can be approximately modelled by a linear equation relating force to displacement.
- Electronic circuit design: Electrical and electronic engineers make great use of Ohms law – a linear equation relating electric current and voltage.
- … every Engineering discipline you can think of uses linear equations (among others).
- Optimisation of warehouse storage and transport of goods from warehouse to stores by large supermarket chains uses linear equations.
- Fundamental Physics research uses …
- … etc. etc. etc.
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