Quadratic Equation Of A Curve

Solving Quadratic Equations

REMEMBER, that in a quadratic equation:

1. We are trying to find out the solution to x which makes the left hand sideof the = sign equal theright hand side of the = sign
2. There will always be two solutions. This is because the x is to the power of 2
3. It is always necessary to check the solutions to make sure that you really do have the correct answers and have not made any mistakes along the way
4. A negative number multiplied by a positive number will always be a negativenumber whereas a positive number multiplied by a positive number will be apositive number
5. In some questions they substitute the letter x for another letter although in essence you use the same method for finding the value of that letter

The Derivation of "Logistic-shaped" Discovery - The Oil Drum

The Derivation of "Logistic-shaped" Discovery The Oil Drum - Jun 26, 2008 Most proofs have simply asserted that the relationship fits our intuition and then the equation gets solved with the resulting sigmoid curve (here or here ...

saying thank you!

haha today was absoulutely fun! chinese we got to finish the "hong hai er" movie thing and still haven't passed in my overly overdue assignments. shall do it tonight. cheryl, naomi and i were like all chionging to finish the worksheet. it was quite fun! haha, we all put down the same answers. xD then math i FINALLY understood the quadratic curve equation and how to solve it! in like dunno how many LIGHT YEARS! halfway during chem, yuanwei, aik an and ka shing came in to return nic's dismantle

Straight Line Graph Conversion

Straight Line Graph Conversion February 20th, 2008 The mathematical expression for a straight line is y = mx + c, where m is the gradient and c is the intercept on the vertical axis (y). When a straight line is plotted, we get a simple straight line cutting across the y axis at the point indicated by the constant “c” in the general straight line equation. Diagram 1: A straight line graph y = 2x + 1 with x-axis as “x”. What if the equation is y = 2x2 + 1 ? Is it still a straight line

Custom List: THOUGHT STOPPING

THOUGHT STOPPING Tip#14 Counting sheep can work but isn't too interesting. An old Frommian technique to fall asleep is to lie down and imagine you are in a movie theater watching a blank screen. If thoughts intrude, just chase them away and go back to the white screen. Tip#13 As with other types of learning, there is a performance curve showing that the more you practice, the better you get. Again, we are playing the percentages, with even a small reduction of bad thoughts being desirable. Ti

Quadratic Formula

The quadratic formula is a quick(unless you can factorise) way of solving quadratic equations. You basically take the coefficient’s of x, x2 and numbers, put then in the formula, work out the two answers and have your 2 solutions of x. And if that wasn’t easy enough written a console program in c++ that will solve them for you(and gives dodgy answers for complex solution ie) imaginary answers when there are no real roots. so for the general quadratic ax2+bx+c=0 So what do you do, wel

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What is Gradient of a Curve?

What is Gradient of a Curve? February 26th, 2008 In line or curve plotting of a graph, we normally come across the term “Gradient”. This is an important parameter that governs the profile of the plotted line or curve. What is this “gradient”? Gradient is defined as the ratio of the change in the vertical unit to the change in the horizontal unit (at a certain point on the curve). From the definition, it implies that the larger the numerical value of the gradient, the steeper is the curve o

Year12 - Quadratic graphs

Year12 - Quadratic graphs Posted on February 29, 2008 by admin. Categories: Year 12. Today we looked at how changing different values in the equation of a quadratic effect its curve.

How To Find The Minimum Point In An Equation

How To Find The Minimum Point In An Equation March 1st, 2008 Given a mathematics equation, sometimes we need to know the minimum point or values of its lowest co-ordinates. There are 2 methods to locate this lowest point in the equation. The 2 methods are: graphical mathematical re-expression of equation I shall deal with both methods here. Example: y = x2 - 2x + 3 (a quadratic equation) 1) Graphical method By plotting the curve generated by the equation, we are able to visually

How To Identify Type Of Roots In An Equation

How To Identify Type Of Roots In An Equation March 5th, 2008 If we are asked to solve mathematical equations that equal to zero, the objective is to find their roots. Roots are those numerial answers to the variable in the math equations. Example: Solve x2+2x+1 = 0. Solution: x2+2x+1 = (x - 1)2 = 0 This gives us x = 1 as the answer. This x = 1 is the ROOT to the equation. However, we need to know there are 3 types of roots to a equation. They are: Real and different Real and equal I