reinout-g

Well, I think this pretty much proves why you shouldn't ask such questions on a math forum.

Anyways, it's indeed the third sentence; He was nervous about taking the science test. Was doesn't express the action by itself but was nervous does. Therefore was is the linking verb.

Haha, no i found it quite a funny way to ask your date out.

I didn't think of it myself though. 

I did make up my own proof for your dress off course.

To put the joke in straight english for rosala and melody (because my current state is called evasive study behaviour).

If Jack is one of all the boys in the world and beth is one of all the girls in the world.

Then (it assumes) there must be some function linking all the boys and girls in the world with their perfect date. So If you enter eg. Rosala you get the perfect date for Rosala.

Now we are looking for the perfect date of Beth, so we enter Beth into the function.

Beth knows from previous experiences that there's a certain type of boy Beth likes to take on a date.

This certain type, which is (off course) a part of all the boys in the world, is a good dancer, a good conversationalist, a gentleman and (obviously) free.

She then states that it was previously determined that Jack is a good dancer, a good conversationalist and a gentlemen.

Since she obviously doesn't know whether Jack is free, she states this is to be determined by the reader.

(which is a joke, since in actual proofs, this is merely a statement saying if the reader is interested he should find out how it works himself)

Since Jack has all the parts of the date Beth wants, he's a solution to the 'perfect date' function. 

Now that was a lesson on set notation 

I'm not 100% sure but I thought there's some rule that

$$ln(x^k)\overset{for x>0,k>0}{=}k*ln(x)$$

I think that for x<0 it's simply not true

Yeah but 12 = 4+2+4+2 

0_o

O____o oh my god!

Let f,S and Dr be as above.

Define g:S->R as g(x,y) = f(x,y) and let J be the set of suits Beth can wear.

Note that J is a subset of S. Define the suit rosala picked as Jr=(10,10).

Note that Jr = Dr. Then given that Dr attains a maximum on f(x,y) and is therefore the best dress of set D, Jr must attain a maximum on g(x,y) = f(x,y) and is therefore the best suit of set J.

Hence Jr is the suit Beth likes most.

phieuw... 

It went right here;

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