Real world applications of Parametric Differentiation.

arianabedi
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Hi, for a presentation I am requested to give some examples of the Real world applications of Parametric Differentiation.

Now i know its to do with a differentiation of 3 variables that are connected, but for the love of god i cannot think of any examples of its practical uses.

any help would be great, if someone could give a very non detailed example of its usage, that'll be terrific.
 
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Well ordinarily you have a function y(x), where x is the independent variable and y is the dependent variable.

With parametric derivatives (of x(t) and y(t) let's say, which depend on t) you have x'(t) and y'(t) . Here x and y are dependent and a function of independent variable t.

So I think some applications of your parametric differentiation would be simple harmonic motion. Have you ever seen those diagrams where the pendulum is going around a circle and this is representing the period of oscillation? That can be described in terms of x'(t) and y'(t).
 
Prove $$\int\limits_0^{\sqrt2/4}\frac{1}{\sqrt{x-x^2}}\arcsin\sqrt{\frac{(x-1)\left(x-1+x\sqrt{9-16x}\right)}{1-2x}} \, \mathrm dx = \frac{\pi^2}{8}.$$ Let $$I = \int\limits_0^{\sqrt 2 / 4}\frac{1}{\sqrt{x-x^2}}\arcsin\sqrt{\frac{(x-1)\left(x-1+x\sqrt{9-16x}\right)}{1-2x}} \, \mathrm dx. \tag{1}$$ The representation integral of ##\arcsin## is $$\arcsin u = \int\limits_{0}^{1} \frac{\mathrm dt}{\sqrt{1-t^2}}, \qquad 0 \leqslant u \leqslant 1.$$ Plugging identity above into ##(1)## with ##u...
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