Ax^2+bx+c formula...math help?

what is it for?


what does a, b and c stand for?


confused

Ax^2+bx+c formula...math help?
This formula is the quadratic standard formula for graphing a parabola (a U-shaped figure used to show the continual rate).





Do not confuse this formula with slope-intercept form (y=mx+b). The a doesn't stand for anything in particular, it will, however be used to find two other points and the vertex in order to graph the parabola.





bx is the variable coefficient and will be used to determine if your parabola will be facing upwards or will have a downward trend...it will also be used to skinny or fat the parabola will be (how much difference it is from the parent function y=bx^2). If it is negative, it will have a downward trend...positive will have an upward trend.





Remember how to find the vertex (highest or lowest point) of a parabola? y=-b/2a (also located in the quadratic formula if one looks close enough...so you should know this stuff from Algebra I)





Then, graph the vertex. Pick two points either below or above the vertex depending on what the coefficient b is in the bx portion of the standard formula.


The formula will typically be y=ax^2+bx+c


Therefore, pick an x-intercept and plug it in to find y...that's what I mean by pick two points...this way you will find a set of coordinates, not just points.





I hope this could help! (:
Reply:ax² + bx + c = 0 is an equation


Formula TO FIND x is:-


x = [ - b ± √ (b ² - 4 a c ) ] / 2 a





Example


2 x ² + 5 x + 3 = 0


a = 2 , b = 5 , c = 3 :-


x = [ - 5 ± √ (25 - 24 ) ] / 4


x = [ - 5 ± 1 ] / 4


x = - 4 / 4 , x = - 6 / 4


x = - 1 , x = - 3/2
Reply:A is the coefficient of x²





B is the coefficient of x^1





C is the coefficient of x^0





they're just constant coefficients...





however,


if A = 1 and the equation is a perfect square, then C = (0.5B)²
Reply:This is just a formula (for a quadratic equation) that tells you how to solve a problem that is set up in this format.


The letters a, b, and c are called coefficients: the quadratic coefficient a is the coefficient of x2, the linear coefficient b is the coefficient of x, and c is the constant coefficient.


So you would be given a real equation (with numbers in place of a, b and c) and would be able to solve the real equation by using the ax^2+bx+c formula, which tells you that x=(-b +or- the square root of (b^2 -4ac)) all over/divided by 2a.
Reply:[13]


A quadrtic equation is genera;;u expressed in the format of ax^2 +bx+c,where a is the co-efficient of x^2,b the co-efficient of x and c is a constant.
Reply:In mathematics, a quadratic equation is a polynomial equation of the second degree. The general form is ax^2 + bx + c





The letters a, b, and c are called coefficients: the quadratic coefficient a is the coefficient of x2, the linear coefficient b is the coefficient of x, and c is the constant coefficient, also called the free term or constant term.





Go to: http://en.wikipedia.org/wiki/Quadratic_e... for further info...
Reply:a= any number


b= another number


c= another


x is a letter


this means for example : a-5, b-6 , c-4


there fore


5x^2 + 6x + 4


hope this helped


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