Question

What is the use of trigonometry, limit, continuity, derivatives & integration in real life. Explain with example of each.

Answer 1

If I take a simple function, say one that only multiplies the input by 22; and if my limit is 1010 at an input 55: then I've described something that seems to match the elements contained in Wikipedia's definition. I don't believe that that's right. To me it looks like an elementary-algebra problem (2p=102p=10). To make it more calculusy, I could graph the function's output when I use inputs other than pp, but that really wouldn't give me anything but an illustration of the fact that one's answer moves farther from the right answer as it becomes more wrong (go figure).

So limits are important; what I've just described is trivial. I do not understand them. I know calculus is often used for solving real-world challenges, and that limits are an important element of calculus, so I assume there must be some simple real-world examples of what it is that limits describe.

What is a simple example of a limit in the real world?

Thank you


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