At A Level, integrating parametric equations will involve either (a) creating a Cartesian equation y = f(x) first or (b) integrating the parametric equation y = f(t) by converting the infinitesimal.
Transcript
By this point, we’ve integrated lots of equations… [have graph and working side by side]
[PRODUCTION NOTE: Make sure the timing is spaced out for these 2 triggers so lines come in with pause between them]
And in doing so, we’ve then been able to find lots of areas under curves.
Like this area [highlight], for example…
Which we can find like this…and then this…to get this value.
However, up to this point, we’ve never started with a curve defined parametrically…
Like this, for example… [show equations]
And tried to integrate y with respect to x…
Which would then allow us to find areas under our parametrically defined curve.
So, in this subsection, we’re going to look at a couple ways in which…
If we’re given a curve defined parametrically…
We can integrate y with respect to x..
And then, we’ll see how to go one step further…and find areas under those curves!