Recent content by shelovesmath

I'm sure it took a while for this black widow I found yesterday to grow those 6 egg sacs . . .

So, I'm transferring into a co-op program in mathematics this fall, and I am scheduled to have my first co-op this spring and summer! I'm very excited at the prospect of actually getting to do some work that is mathematically related, and I've already started my search process. If anyone has...

Multivariate Calculus Intro to Mathematical Reasoning Public Speaking Modern Jewish History

So, I've decided I need to do some Calculus reviewing since I haven't been in a Calc class since last fall, and I'm taking multivariate Calculus this fall. I own a copy of Spivak's calculus, and I know it's supposed to be a challenging math text, but I want to at least try my luck with it...

I'll get right on posting a wet t-shirt photo. Mm hm. Sure.

I would say it needs a little tweaking still, but I'm sure he would appreciate that you are trying to write a poem about math for him. That's very sweet.

I'm hoping: multivariate calculus physics public speaking (something easy)

Hm. I've been enjoying reading the book "Is God a Mathematician?" which essentially deals with this subject matter.

If you want to be like Sheldon on The Big Bang Theory. . .

dx/dt = 0 - 5x/35 dx/dt = -x/7 7/x dx/dt = -1 7/x dx = -dt yep, sounds good

You need to separate dx and dt.

dx/dt = IN - OUT In: 0 (Because it's clean water) Out = (xlbs of sand/35 gallons of water)(5gallons/min) dx/dt = 0 - 5x/35 x(0) = 20 (at 0 minutes, there is exactly 20 pounds of sand in the tank) you need to find when x(t) = .2 this will tell you at what time t the tank has .2...

1. y'' -5y' + 6y = 0, y(0) = 1, y'(0) =2 3. [s^2 F(s) - s f(0) - f'(0)] -5 [F(s) - f(0)] + 6[F(s)] = 0 (s^2 +1)F(s) - (s -5)f(0) - f'(0) = 0 (s^2 + 1)F(s) - (s-5)(1) - 2 = 0 (s^2 + 1)F(s) = s -3 F(s) = (s-3)/(s^2 + 1) Here's where I'm stuck. I can't factor the denominator to...

e^(x+y) = e^x * e*y e^(-y) dy = e^x dx integrate both sides

You can do column and row operations when finding the determinant.