Recent content by Robokapp

Are these TRue or FALSE I am trying to figure it out for 3 hours now and I am really stuck 1) For all x and all y, there exists a z such that x+y=z ya. obviously. 2) For all x there exists a y such that for all z, x+y=z obviously. 3) There exists a x such that for all y, there...

let me give it my shot: call f'(x) = g(x) /* Why not */ lim_x->a g(x)=D g(a) != D So...lim_x->a g(x) = g(a) if the function is continuous...obviously. lim_x->a g(x) = D if the function is defined at that area. How about {g(x) = x/x for all x !=0 g(x) = 0 for x=0} It's a...

Yes I know sticking/bouncing matters. For clarification I picked one of the two situations so you guys don't have to guess. I expressed what I meant poorly... EDIT: so Energy conservation would indeed tell you the height. Thank you for the help. it did help a lot. A small question...

Yes I knew that formula for centripital (is it not spelled "centripedal"? not trying to be rude, just asking)acceleration. Okay...but why do you call it "uniform centripedal motion". what do you mean by "Uniform". It is descelerating and accelerating. Do you mean "continuous"? What I...

Uh...I never had to use integral for it. That's exactly it...I'm thinking it's something that changes as rope changes position, but my teacher, TA and everyone else are using...simple algegra. One piece of info I got form my TA, and I memorised because I have no idea where it came out is...

This is not really a homework question...it's more like me begging for a link. I'm in physics 131...basic freshman college class. I can do most of the stuff ok. Think about what problem is about, draw a pciture, draw some arrows...label some forces, sum things up in perpendicular...

All you need to know is in order to pull out a zero from nothing but multiplications you need to multiply by zero somewhere.

bowl is shape of a sphere. Some water was left in because the hole went sidways. The fish flew out of the bowl though but no it didn't die :D It sucks how you have to have an account to see it though, I'd love to share it with some friends but I'm too lazy to take and upload a screenshot of it...

This is my assumption: \sqrt{i^{2}} = \sqrt{-1} = i i^{2} is equal to -1 and square root of -1 is defined as i.

well...if you take the square root of a ngative over a negative you'd end up with a bunch of i which would cancel making the function real again. \sqrt{\frac{a} {b}} = \frac{\sqrt{a}} {\sqrt{b}} regardless of a and b as long as a/b >0 or a=0

I laughed and tipped my fish bowl all over my dorm floor lol.

just U-substitute u=3x if you must and apply chain rule. dy/dx=dy/du*du/dx

It's a question I had on a quiz a few minutes ago. f(x) = sin(x) for x < or = 0 and f(x) = x for x > 0 Question was...does f'(x) exist? what is it? ------------- First I proved the f(x) is continuous at 0 by stating limit as x->0 from left = limit as x->0 from right = f(0)...

Well, quadratic graphs are studied in Algebra 2 but Circle Formula is introduced in Geometry 1. it's (x-h)^2+(y-k)^2=r^2 meaning it's in fact a square root function for a semicircle, not a quadratic. I had a difficulty understanding this also, in the area close to vertex it looks...

I'd define distance as anything representing the traveled trajectory of a moving ... something. I mean...there's something called "Angular distance" and it obviously has little to do with a straight line...because it's a circular motion.