- free simultaneous equations worksheets
- google simultaneous equations
- getting answers quadratic equations
- simple quadratic and simultaneous equations
- rules to factorise quadratic equation
- "quadratic equation" "real life application"
- quadratic fromula sovler in steps
- solving equations with derivatives
- what are the roots of a quadratic equation for kids27
- solve for x +calculater
- hardest number math problem with answer
- picture of rebecca olson gupta
- real life quadratic function
- solve quadratic equation fill in
- negative values in simultaneous equation
- show me a quadratic equation of a football kicked
- quadratic equations and how to solve them
- real life applications quadratic function
- solve simultaneous equations c=b%5e2/4a
- quadratic equasions h k
|
|
Easy Way To Solve Equations
Solving Quadratic Equations
But there was more!:I'm looking for the equation of a demand curve, which is usually negative sloping, i.e. y = -x. Well, at least that is how it should look. However, I know that y = -x is a linear equation, and that's not exactly what I need. I guess it could be negatively exponential, but I just don't know. Perhaps it might help to give you a few examples of the points on the curve (points are in x:y format)
1) 1,000:400
2) 1,500:300
3) 2,400:200
4) 4,000:100
I should think that the y-intercept would be around 800. It doesn't matter very much whether the curve touches the x-axis, but I would think that the curve would start approaching it around 8,000 or 9,000.
This is actually the curve that I'm trying to find the equation for. Not only that, but then instead of having it in the format of y = ... , I would need it in the format x = ... If you could show me how to find that, I would appreciate it very much.
Answer:
The curve looks like the top right of a circle as I visualise it. You will find it difficult though to work out the exact equation of the curve.
Perhaps this may help put it in the form x=ay^2+bx+c:
y=ax^2+bx+c
y-c=ax^2+bx
You then have to complete the square:
y-c=sq( rt(a)x+(b/(2rt(a)) ) - b^2/4a (test it by multiplying it out. I may have made a mistake)
y-c+b^2/4a= sq( rt(a)x + (b/2rt(a)) )
rt( y-c+b^2/4a ) =rt(a)x + (b/2rt(a))
rt( y-c+b^2/4a)- (b/2rt(a)) = rt(a)x
<rt( y-c+b^2/4a ) - (b/2rt(a)) >/ <rt(a)>= x
A bit difficult to follow, so suggest writing it out on paper. Have used sq to mean ^2 at times and obviously rt(x) to mean the square-root of x. May be some mistakes here so apologise in advance if so, but gives the general idea on how to isolate x
Defensive Devils In Red Paradise - Goal.com
Defensive Devils In Red Paradise Goal.com, Switzerland - Jun 30, 2008 Exciting Brazilian prospect Rafael Silva will probably be out of the equation too due to his young age (18) and lack of first team experience for his ... |
Derbyshire: June Diary - National Review Online Blogs
Derbyshire: June Diary National Review Online Blogs, NY - Jul 1, 2008 The only way to learn math is to grind your way through endless drills. You want to understand quadratic equations? Solve a couple hundred of them, ... |
From lab to library: Who's on the shortlist for the Royal ... - Independent
From lab to library: Who's on the shortlist for the Royal ... Independent, UK - Jun 10, 2008 According to Stewart, the most important thing about the Babylonian mathematicians is that they began to understand how to solve equations. ... |
Pakistan in need of another bounce-back - CricInfo.com
Pakistan in need of another bounce-back CricInfo.com, UK - Jul 2, 2008 The equation is now simple: beat India, hope Sri Lanka beat India, beat Bangladesh, all the while with an eye on a better net run-rate. It will not solve ... |
Funny thing happened on the way to global warming - Cumberland Times-News
Funny thing happened on the way to global warming Cumberland Times-News, MD - Jul 1, 2008 At least they have learned to cover both sides of the equation. That is a cunningly beautiful proposition. They are "correct," either way the wind blows. ... |
What Do You Want On Future Browsers? - Slashdot
What Do You Want On Future Browsers? Slashdot - Jun 30, 2008 I really hate to go that java/activex way to solve this issue today. by Rinisari (521266) with things like AIR starting to be accepted by developers, ... |
Heads in the Cloud at Structure 08 with Salesforce.com and NetSuite - MyCustomer.com
 MyCustomer.com | Heads in the Cloud at Structure 08 with Salesforce.com and NetSuite MyCustomer.com, UK - Jul 3, 2008 It’s time to start thinking about User 2.0 and the attitudinal differences these new users bring to the equation. Now ad-hoc, socially-oriented, ... |
Americans will make it through tough times - Oakland Press
Americans will make it through tough times Oakland Press, MI - 16 hours ago Add a shrinking investment portfolio into the equation and you have a lot of nervous people. In other words, with all that is occurring throughout the ... |
