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Favorite Equation?


What's your favorite chem/physics/math equation?  

1 member has voted

  1. 1. What's your favorite chem/physics/math equation?

    • PV=nRT
    • e=mc^2
    • F=ma
    • e^(pi*i) + 1 = 0
    • Fg = -G(m1m2/r^2)er
    • integ(uv) = uv - integ(v du)
    • a^2+b^2=c^2
    • zeros(ax^2+bx+c) = (-b +- sqrt(b^2-4ac))/(2a)
    • e=nhv
    • Other

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[math] 4\pi r^2 = 2(\pi r(2r)) [/math]


Surface of a Sphere = Surface of Cylinder of equal radius and height.

AND, any slice of a sphere between two parallel planes has the same area as a cylinder the same height with a radius equal to the original sphere.



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6: ultraviolet voodoo!



Not that hard to explain.


We know that:

[uv]' = u'v+uv'


If we take the integral on both sides, we get:


int([uv]')dx = int(u'v)dx + int(uv')dx

(assumes that x is the variable in the equation)


int([uv]')dx = uv, so:

uv = int(u'v)dx + int(uv')dx


The sollutions are then:

(1): int(u'v)dx = uv - int(uv')dx, and

(2): int(uv')dx = uv - int(u'v)dx


Not more woodoo than that. ;)

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god, as always, e=mc2 gets the votes simply because people recognize it better


I do agree with that to some extent. One of the reasons that people recognize it better is because it is a very important equation. :)

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  • 6 months later...

[math]e^{i\pi} + 1 = 0[/math] wins out for me every time! Simply because it lists so many importannt and intresting things in it :)


[math]E=mc^2[/math] Comes in a close second and any of the others could be third depending on my mood :D




Ryan Jones

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