Recent content by you878

When given a cylinder with radius, height and thickness, how does one go about computing the amount of material used in making the cylinder? Initially I thought the amount would be: Material=2\pi r^{2}t+2\pi r h t where t is the thickness of the cylinder. Looking at this equation...

I was using Mathematica to find the limit of the equation: (x^3*Floor[x - 3])/(x - 3) As x approaches 3. Mathematica gave the answer as 0, but when I checked by hand, I did not get that. As the function approaches 3 from the left side, it goes to positive infinity. As the function approaches 3...

Thanks for the clarification. I had a feeling it wouldn't exist, but was a little unsure.

Does a derivative exist at a vertical asymptote of a function? For the function 1/(x^2), there is a vertical asymptote at x=0. I know that the limit of the function at x=0 is Infinity, but is the derivative at x=0 also infinity, or does it just not exist?

A friend of mine grabbed a handheld 10,000 volt tesla coil (the metal end) in one hand and a florescent bulb-tube thing in the other, and showed me that he could light the florescent tube using the electricity from the tesla coil. My question is, why did it not shock him, and are there any...

I'm writing a program in java and I need to find an algorithm to calculate all possible sudoku solutions for a board of size n. I don't need to know how to solve it, just how many possibilities there are.

Got it, thanks.

Homework Statement s varies directly as r and inversely as t. s=10 when r=5 and t=3. What value of t will s=3 and r-4? Homework Equations Direct variation: y=kx; Indirect variation: y=k/x The Attempt at a Solution I tired s=kr=k/x and plugging in the given, but I could not get t in the end. My...

I've noticed that when driving down a road, cars passing in the opposite direction appear to be going much faster than if viewed from a stationary position. I asked my friend how you could calculate how fast the other car appeared to be going and he said you just add your speed and the other...