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# Tutor profile: Cac P.

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Cac P.
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## Questions

### Subject:Physics (Newtonian Mechanics)

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Question:

What is the tip in solving moving object problems?

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Cac P.

The easiest way to see the correlation between displacement, velocity and acceleration is to draw a graph. With the given velocity, you can find the distance by looking at the area below the velocity graph just like how integration work, the same applies for acceleration or go the other way.

### Subject:Calculus

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Question:

How do you get better at Calculus?

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Cac P.

Do the simple question and understand the general formula from that. You will get better as you do it more and when you encounter a completely new problem, I can show you how to do it and connect it to the previous formula that you have learned

### Subject:Microeconomics

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Question:

How do I remember the elasticity of demand or income or cross-price without mixing them?

Inactive
Cac P.

The elasticity of demand does actually make sense when you think about the change in quantity and price as in the formula. It is elastic when people buy less even with a slight change in price, so the change in price is always smaller than quantity, that's why the elasticity which is the change [ quantity/ price ] turns out to be larger than 1. And the same for inelastic when people still buy it even with a bigger change in price, so the change in quantity always larger than price. For the elasticity of income, when people's incomes go down which is negative in income change, the quantity goes up, the elasticity is negative. The other type is just normal, one thing goes up, the other goes up. For the cross-price, when 2 company are enemy of each other, their produces are substitutes That's why when 1 quantity goes up, the other quantity will go down and to keep the total revenue same, the other company has to increase the price so that one quantity goes up, the other price goes up. That's why the elasticity for them is positive.

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