The quadratic equation. It's relatively simple and gives a decisive way to treat the geometry of conic sections (parabolas, hyperbolas, ellipses). I have never found the cubic or quartic equations to be helpful, and there isn't even one for quintics or higher.
2006-12-15 12:53:24
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answer #1
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answered by Steven S 3
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I myself actually love the definition of the derivative.
lim [f(x+h) - f(x)]/h
h -> 0
Why? Because for a number that doesn't really exist (since limits are approximations), it has so many valuable applications.
My other favourite, as a couple of people have already answered, is the equation
e^(i*pi) + 1 = 0
Which combines 5 of the most important concepts of math.
2006-12-14 23:52:56
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answer #2
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answered by Puggy 7
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Wow! I have a lot... I love the Calculus equations to solve parabolas. Otherwise, I realy like (a+b)^2 = a@ +2ab + b^2...
Also, I love the I = Prt
2006-12-14 23:45:43
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answer #3
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answered by Anonymous
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DwayneK+JenniferG=BigHeart
2006-12-15 02:13:31
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answer #4
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answered by Anonymous
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e^(i*pi) = -1.
Because it combines almost everything important about maths: complex numbers, trigonometry, exponentials negative numbers. It also has the three most interesting numbers in maths: e, i and pi.
It also has -1 which is pretty great too.
2006-12-14 23:40:43
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answer #5
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answered by THJE 3
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e^ipi+1 = 0
because this has got 0(additive identity) 1 multipilcative(identity) imaginary numer i and transadentals pi and e.
2006-12-14 23:48:27
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answer #6
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answered by Mein Hoon Na 7
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