Ask a Math Student Stuck in a 2 hour Calculus 1 Lecture ANYTHING!

• Posted by a hidden member.
Yup that's right
I'm here... doing stuff I already know... (while eating cold oatmeal lol)
So keep me awake!
I'll answer it (if I can). DONT BE SHY

(Emphasis on the ask me ANYTHING... you know... stuff that isn't exactly math related as well hahaha...

However I must say... I thought I was the only math dork in the world... now if i could only find a Math dork that likes to go the gym, is my height, attractive, and lives in NYC... sigh)
• Posted by a hidden member.
Okay, I'll start ...but they're quite lengthy! Here goes...

----- How do fashion trends work?
----- Who decides what the trend is for each each season?
----- What factors determines the fabric, color, texture, silhouette, etc. presented?
----- Where does one go to find the trends for each season?
----- When does a fashion trend go out of style?
----- Why do girls get to wear any color they want but guys barely get experiment in that area (How many royal purple suits do you see men wearing? How many peach colored slack do you see on men's clothing racks?)
----- How does a person become fashion forward? How does a person avoid falling behind?

- For a young gay man 18-25, what would you suggest as basic requirements for their wardrobe?
- Who is your favorite designer?
- Where is your favorite place to shop for clothes?

• Posted by a hidden member.
ZiMpLuS saidOkay, I'll start ...but they're quite lengthy!

har har har lol

Good thing I put that "I'll answer it (if I can)." Clause in my original post
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• Posted by a hidden member.

No, not to me lol.

He's severely smart, but I guess I focus so much becuase he doesn't look attractive lol.

Someone has to like him though . . .
• Posted by a hidden member.
Are the integrals of all transcendental functions obtainable by polynomial differentiation of Taylor expansions?
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can't answer? perhaps you shoulda been paying attention. snap.
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carthesis saidAre the integrals of all transcendental functions obtainable by polynomial differentiation of Taylor expansions?

Can't tell you - I'm in Calculus 1 remember lol

The subject of Taylor Expansions is in Calculus 2 and 3

But to take a wild guess, I believe the answer is yes lol - but not sure....
• Posted by a hidden member.
omg lol i love calculus!
• Posted by a hidden member.
What's 1 + 2?
• Posted by a hidden member.
yes. Yes? yes.

all transcendental functions can be written as Taylor expansions

all Taylor polynomials can be integrated

Then
all transcendental functions can be cast as differentiations of tayor polynomials.

all transcendental functions can be integated

Then
integral transcendental function = integral of differentiation of a specific tayor polynomial

Here's a pretty one that's a less abstract, but more tricky:

integral from 0 to infinity of e^(-(x^2)/2) dx

I had it on a take home test in a slightly different form when I took Calc 2 with an insane teacher, but this one happens to be solved on Drexel's Mathforum, so you can look it up if you can't get it.

SPOILING EVIL HINTS BELOW

Try it first!

If
I = integral (0 to inf) e^(-(x^2)/2) dx
then
I^2 = integral (0 to inf)(e^(-(x^2)/2) dx) *
integral (0 to inf)(e^(-(x^2)/2) dx)
and
I^2 = integral (0 to inf)(e^(-(x^2)/2) dx) *
integral (0 to inf)(e^(-(y^2)/2) dy)
(you can do this because variables are nothing more than placeholders: won't affect the numerical value at the end)
I^2 = double integral (0 to inf)e^(-(x^2+y^2)/2) dx dy
What does x^2+y^2 look like?

MORE SPOILING HINTS BELOW

transform to polar coordinates, x^2+y^2 = r^2
dx dy becomes r * dr d(theta)
don't forget to change the limits of integration

The whole solution altogether.

Sorry for the long ass post.

• Posted by a hidden member.
Aww shoot, you're in Calc 1. Well, you won't get to the stuff in my post until Calc 2. Sorry blind2limits
• Posted by a hidden member.
Buckwheet saidWhat's 1 + 2?

Fish

No really it's just 3
• Posted by a hidden member.
duckyflotsam saidAww shoot, you're in Calc 1. Well, you won't get to the stuff in my post until Calc 2. Sorry blind2limits

It's okay.. just take out all the spaces in your rather lengthy proof post
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Uh, I kind of did it for a reason: so readers could run into the hints one at a time. But if enough people (like, 2) mention its incredible annoying-ness , I'll do that.
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blind2limits said
Buckwheet saidWhat's 1 + 2?

Fish

No really it's just 3

I like the fish answer. You're gonna make one helluva janitor! j/k
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I know some math majors will hate me for this, but have you read David Foster Wallace's history of infinity titled Everything and More? I recommend it. Most critics just can't stand his writing style. I admit his style is an acquired taste, but for those of us who *do* like this author the book is very rewarding.
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Are we going to lose another forum to idiotic...

Aka is this going to turn into the now infamous Miscellaneous section of the bb.com forum.....
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blind2limits said
Buckwheet saidWhat's 1 + 2?

Fish

No really it's just 3

Not in base2 or base3.
• Posted by a hidden member.
PDSurfer said
blind2limits said
Buckwheet saidWhat's 1 + 2?

Fish

No really it's just 3

Not in base2 or base3.

Not in base 8 or base 16 either, but you dont see me complaining lol

Someone had to do it lol