Math Forum / Mathematics / Undergraduate Math / June 2009

Bertrand Russell said:
"Mathematics possesses not only truth but supreme beauty. A beauty that is cold and austere like that of a sculpture."
I want to experience a bit of that, and I certainly want to use math/logic to develop my overall brain and thinking and problem solving ...

hey does anyone still have that 5th edition of beford for statics??

I'd like to know the proper way to set up the equation for this math word
problem:
"How many minutes is it before 12 noon if nine minutes ago it was twice as
many minutes past 10 am?"

Is there a way to find out if there's a function that maps two sets?
For instance, if I have a = {1,2,3} and b={4,5,6} then a function that
maps a to b is f (x) = x+3. That's an easy case, of course, but what
if I have 2 sets and it's not easy to figure out the function. (please

I don't get how to do exterior calculus and what the ^ symbol does. Can anyone help? THnks

I'm 44 and going back to college after an absence of 18 years. To get into
my college's B.Sc. Psychology program, I need accreditation in a 12th grade
calculus course. Before I can get that I need remedial math starting at the
9th grade level. Any suggestions?

Consider a function of N variables, i.e. f(x_1 ... x_N). I would like to
know how many unique derivative terms are at M^{th} order. Some M^{th}
order derivatives are:
\partial f^M / \partial x_1^M

solutions manual  and Test Bank
contact with ,
solutionsservice (at)  hotmail.com  (my email
address,solutionsservice@hotmail.com ),  these are parts of our

Find all shapes which satisfies this:
a constant times the integration of surface area equals volume.
The constant must be constant for all dimensions.
Ex. perimeter of circle to area of circle, constant=1.

What is the difference between P=0 N=1 and P=1 N=1?

My formula for calculating the circumference of ellipse is attached as a small note. I will be grateful if you read and judge it.
(See: http://mathforum.org/kb/servlet/JiveServlet/download/128-1921864-6683056-551607/
circumference%20of%20an%20ellipse.pdf)

I am not an undergrad, in a long time, but I should have learned this.
How do I express the changing perimeter of a rectangle of fixed area as the width decreases???
For example:
My daughters asked me how many laps around an acre equals a mile.  Well, it depends on the shape of the ...

I wanna know that how can i find third coordinate of right angled
triangle when i know two coordinates?