Area between curves

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Instead of spending 2 weeks in class, I spend 4 min with this vid, and I end up knowing more than the people who go to class.

adventureman

So many concepts explained well and quick. This is the way to go.

odyseuszkoskiniotis

Six weeks of Calc 1 over the summer and I couldn't understand this. I'm now able to do it after watching this video lol.

TheKingOfHalo

Thank you Khan Academy! I just learned (what I couldn't learn in hours of class) in 4 minutes!

brendagloria

Last minute catching up, thank you once again Khan Academy

Hajest

When you realise that you are taught stuff that'll probably never come in handy in the future.

tasinal-hassan

This explanation was really clear, thank you!

AlexVoxel

How do we exactly understand which graph is above and which is below? Sometimes you can't say it just looking at the graphs. Is there any way to find out?

remygelenidze

Ouch! well I found a possible start to answer this. let R = radius of meadow and r = radius of chain.

(1/2)πR² =

Now solve for r numerically if given R. Source Wolfram MathWorld Circle-Circle Intersection. There is an example for this problem where R=1 and little r comes to 0.8079455... on the page.

rhoadess

:( I wish there was theoretical Physics available in my country. I don't want to do Law or anything else. I feel sad. I feel materialistic. I want to learn Physics.

takshashila

3 days in class... 3 days and I didn't get it as well as I did in this 4 minute video.

spinseffing

Thank u sir pz help me how can I findout the area between curve y=x^2-3x+8 and line y=x+5

ashwinispatil

Can you give me a solution for the following problem: a goat can eat 1/2 of a round meadow The goat is connected with a chain at a point on the edge of the meadow. How long is the chain ?
This problem haunts me for decades !!
I can find a solution but it gives me an equation I can't solve.

henricuyvers

Is there any possible way to quickly determine the intersections between curves so to know the limits of the integrand without using any graphical calculator??

prime_vibes

If you didn't have the bounds...can you set f (x) = g (x) to find them? I just started Calculus 2. Doing homework lol.

liskyu

I have a question. Why did you rearrange the formula to, (rootx-x^2)?, why not the other way round like, (X^2-rootX)???. This is where I sometimes lose marks because I rearrange them wrongly. So what's the logic behind re arranging them the correct way?

eugenechelseafc

Amazing explanation, but can u tell me what is the name of the app you are using? I mean the one where you are drawing the graph. pd: sorry my bad eng

ignestrada

reply to rhoadess:your solution is for 2 equal circles but the circle of the goat must be bigger dan "1".
to eat 1/2 of the round meadow
Thanks for the information about Circle-Circle intersection

henricuyvers

can we find function by having area covered by that function in some limit s

mdfareed

reply to rhoadess: little "r" must be at least more dan "1" for R=1

henricuyvers

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