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#1
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Quadratic Equation
I just realized I completely forgot this, does anybody know it. Thanks.
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#2
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Re: Quadratic Equation
Google is your friend.
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#3
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Re: Quadratic Equation
(-b +/- sqrt(b^2 -4ac)) / 2a
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#4
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Re: Quadratic Equation
ty
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#5
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Re: Quadratic Equation
I will never forget that formula as long as I live.
Morphball...why in the hell did you need the quadratic equation may I ask? |
#6
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Re: Quadratic Equation
I need it to calculate the trajectory of certain biological eruptions...you just can't go on with life unless you know, you know?
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#7
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Re: Quadratic Equation
A helpful way to remember it is to the tune of Pop Goes the Weasel.
"x equals negative b plus or minus square root of b squared minus four a c all over 2a" |
#8
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Re: Quadratic Equation
[ QUOTE ]
A helpful way to remember it is to the tune of Pop Goes the Weasel. "x equals negative b plus or minus square root of b squared minus four a c all over 2a" [/ QUOTE ] Coincidence? If anyone needs me I'll be in my bomb shelter. |
#9
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Re: Quadratic Equation
[ QUOTE ]
I just realized I completely forgot this, does anybody know it. Thanks. [/ QUOTE ] No need to remember, just complete the square. ax^2 + bx + c = 0 x^2 + (b/a)x = -c/a (x + (b/2a))^2 - b^2/4a^2 = -c/a [complete the square] x + b/2a = sqrt(b^2/4a^2 - c/a) tidy up and get [its tough typing this stuff] x = ( -b +- sqrt(b^2 - 4ac) ) /2a Strangly after years I can remember that with no trouble but cant remember the formula. chez |
#10
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Re: Quadratic Equation
solve(f(x),x)
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