Cross elasticity of demand | Elasticity | Microeconomics | Khan Academy

Price of one good impacting quantity demanded of another

Microeconomics on Khan Academy: Topics covered in a traditional college level introductory microeconomics course

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[innanninna]

your videos are the easiest to understand here on youtube. thank you. you are helping a lot o students with their exams including me

[khanacademy]

@pengok1995 So that we get the same elasticity whether we move from A to B or B to A. You can think of it as the "average" elasticity between points A and B. You are correct about how you would calculate percentages generally.

[esthernaua]

when this 11min video helps me understand my entire 2hr lecture, MiNdBlOwN!!!

[WestSideRida]

A1 loses and A2 wins. Keep it up Kahn. You're great. I'm learning more here than in my own university. They actually use your videos in some assignments. Pretty sad that I can come here and learn the same thing in a better way than what my university is teaching. Like I said, they even use your lectures in assignments. What the hell am I paying for? Roughly $18, 000 for a piece of paper that says I learned your material.

[dangiscongrataway]

Why do you divide by the average, in class we divide by initial value

[graylobo]

Best treadmill work out videos, i discovered KA over 4 years ago when he only had a few videos

[Alanyutwhckbsbc]

clear ideas, nice and clear handwriting. I have to say that your videos are really helpful to first-year econ students.

[gabyp]

hey khanacademy,
quick question so if you had perfect substitutes the CED would be infinity, that is, the CED of substitutes approaches infinity. My question is: "Does the CED of complements approach negative infinity as well?

[ss]

Thanks for explaining! Really grateful❤🙌

[DjSeanTacos]

What courses do Khan Academy not cover?

[Pinapoups]

your explanations are so good, it helps me a lot! but i wanna ask, what if the CED values is "undefined"? it is means that the goods are not related too? Thank you

[arathigal]

Hey great videos! I was just wondering if you could do videos on factors that affect elasticity. For PED, PES and CED. Thanks, it'd help a lot (:

[aik]

I thought the formula was % Change in Quantity of A Demanded/%Change in Price of B? It looks like he used the Q of B and P of A. I'm confused...

[nghialetrung]

thank u very much, this video helps me a lot

[VijayRaavi]

Good video, but since ebooks are nonrival goods why would people want more of them? I guess they'd want a bigger selection though.

[huero]

All your videos are really good and clear!!!! Thanks for your time...

[aaronsmarrella]

I'm trying to calculate the CED for an example given in class and any help would be much appreciated. We are comparing the complements of Tequila and salt. The original price of tequila is 10 and the quantity is 10. The price went up to 20 and the new demand is 5. The complement being salt had an original price of 2 dollars and the new price stayed at 2 dollars, but the quantity demanded of salt went from 3 to 1. The professor provided a CED of .7
Using your formula, I got -1.5 from the output values of P for tequila being .66 and the output of D for salt being -1
Help please

[martinahoto]

correct me if I'm wrong. the percent change in price for airline 1 should be revisited. i think the percent change is 40% not 4.9%.

[filipmtl]

Thank you!!! i learned more from you than in my school. :D

[Giovanni-toxh]

But why do you say that if it is complimentary then it is negative? what if the change in the ereader was positive? then you are not going to have a negative result anyways! It's not always negative! and the substitute is not always positive! right? they can also cut their price and make it not 1050 but 950. then it would be negative? oh im confused sorry