Recent content by RogerDodgr

Show (x^3+2x)/(2x+1) < x^2 as x --> infinite Homework Statement Show (x^3+2x)/(2x+1) < x^2 as x --> infinite Homework Equations This is not a formal proof. I just need to reduce the left side of the inequality to the point it is fairly obvious that it is less than x^2 as x-->infinite...

I'm in need of help. I need the formulas for total-electric-flux enclosed for a final exam *tommorow. My teacher (nice guy but total slacker) never did any handouts, and I am not the quickest to catch on when he tried to explain in about 20 minutes the concept of surface integrals. I was just...

Thanks for your help HallsofIvy, I misinterpreted the solution.

Given augmented matrix [A|0]: -->RREF -->x=? I started with: |0 1 0|0| |0-3 1|0| |0 0 2|0| --->RREF---> |0 1 0|0| |0 0 1|0| |0 0 0|0| The RREF is correct according to solution manual, but the solution manual says that the vector x = |1| |0| |0| I think I understand why x_3 and...

http://sudokupuzzles.net/SCREEN.gif Regarding a=@16... and in particular the symbol that looks like @ , what does @ mean? Thanks in advance; this has been bugging me for a long time.

I'm not saying stocks are a good value right now with the economy in trouble and all,,, but if you do decide to go that way, consider going with the one of the best investors of all time: Warren Buffet/Berkshire Hathaway. Yes they are huge now, so don't expect the returns of the past, but imo...

Wow jacobpm64, thanks sincerely,,, This statement was particularly helpful: "notice that we have f_6 and f_7 being a free variable since the last row is completely zero..." Also, knowing that I'm not totally off base gives me confindence to progress forward... I originally started...

http://www.sudokupuzzles.net/IMG_0035.jpg Thank you quasar987, I don't know how I could better state what seems obvious. Maybe it should say 'All possible linear combinations...' I won't be including the definition (or my misspelling, the definition was copied from my textbook). Sorry...

Homework Statement http://sudokupuzzles.net/IMG_0033g.gif Homework Equations Flow into a node=flow out of a node. Turned relative flows through each node (A,B,C,D,E,F) into system of equations; and entered system of equations into augmented matrix as shown. Reduced matrix to REF...

Homework Statement http://www.sudokupuzzles.net/IMG_0032.gif Homework Equations I think I get the basic concept of spans (all possible combinations of vectors with all possible scalers). The Attempt at a Solution:blushing: It seems obvious that the span of S would have to be in...

It's not a trick question. I honestly am not sure that I am right; that's why I asked :) Is there a flaw in my logic?

Homework Statement 0/0=? (This actually came up in a homework assignment). My teacher dismissed it as d.n.e. but I actually believe it has the solution set of 'all real numbers'; it has pertinence to a specific problem in calc III that I find interesting. I have read some contradictory...

I noticed this a while back and recomended it to some students I know who are currently struggling with calc I. I think it is great for what it is; just a quick overview. It reminded me of several thing I forgot.

I know this is simple, and I am missing something obvious. I'm suposed to use the "jacobi method"; and with each iteration it should be getting closer and closer to the solution (x=2 and y=1, which it is not). Could someone explain what I'm doing wrong, or how to start...

issue resolved; thanks dick Given are listed in photo: t_f=time final (at impact) y_max = max height v_o = initial velocity final height = initial height = 0 x_f =D = final distance I am having a problem with this because I know max height time must be half of final time at impact...