Recent content by supermath

So can the reaction be "skimmed off" to power the neutron generator? Or does it only apply to pulsed designs? skimming off

Thanks for the reply, Astronuc. I actually meant magnetic nozzle not MHD. The magnetic nozzle's magnetic field will be used to generate electricity, similar to z-pinch designs which make electricity for the capacitor bank. I was under the impression Zubrin's NSWR was feasible, but too Dr...

Can the helium-4 exhaust be collected(MHD) to power the neutron generator?

Constant Acceleration Can Fission Vasmir provide constant acceleration for a couple of hours or days? Luna level gravity or less.

So you still have to multiply the 7 * -15 to get -105?

Yeah, that just helps me when grouping. Our homework and tests are online this semester. I have a notebook where I write the problems down, solve em, type the answers on the comp. Side question, is there a link or thread on how to write codes or bb codes when posting. For example, the double...

##42^2 -13x-42=0## ##42^2-49x | 36x-42=0## ##7x(6x-7) | +6(6x-7)## ##(6x-7)(7x+6)## ##x=7/6 x=-6/7## ##7/6, -6/7## <--------- Answer Thanks etotheipi

Ok. I made a mistake I wrote +13x. it's -13x. In this previous problem 7x^2 + 7x - 15x -15 = 0 for the second group (-15x-15), did we factor out a -15 and arrive to -15(x+1)?

##42x^2 + 49x - 36x - 42 = 0## I keep trying to bring down the -36, and then dividing the -36 with the -42. -36x-42=0 -36(x+42/36) And then move on to the other group[##42x^2]

Do all the terms need to have a common factor to pull out. In this problem ##42x^2 +13x -42 = 0##. 1 is the only common factor. So, I multiply 42*(-42)=-1764 36, -49 multiply to -1764 and add to -13. I once again get stuck like in the original problem. ##7x^2 +36x - 49x - 42 = 0## or...

Thanks. I'm actually doing just that. Seems like I'm just not getting it.

Should I memorize the formula? Also when I grouped using ##7x^2 -15x + 7x - 15 = 0## I get (x-15/7)(7x+7). When I switched to the way you wrote it ##7x^2 +7x - 15x - 15 = 0##, I get (x+1)(7x-15). my homework helper software confirms the answer is (x+1)(7x-15). My other question is, am I...

Oh, gotcha. Isn't that what I did in my original post? I thought you are suppose to keep the -105 in the equation like this. ##7x^2 +7x | - 15x - 105 = 0## And then group.

You've lost me. Is that Reverse FOIL? BTW, is the equation a Non-monic Trinomial? I'm looking through my notes to see which method to use, and Non-monic trinomials seem like the one to use.

Is the -15x from 7x and -8x? Shouldn't it be a -1x?