00:01
So here we're thinking about a firm trying to do the best it can for its bottom line, right? and so first of all, it introduces these terms, mr and mc.
00:08
We should define those, right? mr is equal to marginal revenue.
00:14
That's what it stands for.
00:16
And its definition is revenue gained from the last sale, right? unit sold and as opposed to marginal cost mc which is the cost of selling or producing the last unit.
00:47
Alternatively, you could think of these as the marginal revenue is the revenue would make from getting one more.
00:53
And the marginal cost would be the cost that you are incurring from producing one more, right? margin means one more or one less.
01:01
So here, if mr is greater than mc, it means that the extra revenue is greater than the extra cost, right? and since profit is equal to revenue minus cost, it means that profit is going up, right? so for an example, here it's seems like the marginal revenue is maybe plus eight.
01:31
The marginal cost would be six.
01:33
And so the profit is going up by two, right? the last unit we sold brought in eight dollars...