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  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

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#26 2014-04-06 04:39:40

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,494

Re: Quadratic Inequalities

If you need help with it I will post a G program in the computer thread.


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

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#27 2014-04-06 04:47:25

phrontister
Real Member
From: The Land of Tomorrow
Registered: 2009-07-12
Posts: 3,915

Re: Quadratic Inequalities

Yes, I'd like that! I need the help because I'm only scratching around, not knowing where, what or how to scratch. I have to go to bed now, though. Catchya later...


"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do." - Ted Nelson

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#28 2014-04-06 04:48:15

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,494

Re: Quadratic Inequalities

Okay, when you get back there will be one in there. Have a good night.


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Offline

#29 2014-04-06 10:33:33

phrontister
Real Member
From: The Land of Tomorrow
Registered: 2009-07-12
Posts: 3,915

Re: Quadratic Inequalities

G'mornin', Bobby. Off to work soon, but had time to correct my spreadsheet to incorporate the 'minimum' constraint I'd overlooked. Luckily it only took a few minutes as it needed just some simple tweaks.

I used conditional formatting to yellow-highlight equation-results cells that had values < -18, and also to identify those with value = -18.

View Image: QuadIneq.png

Last edited by phrontister (2014-04-06 10:34:13)


"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do." - Ted Nelson

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#30 2014-04-06 12:47:11

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,494

Re: Quadratic Inequalities

As soon as I deal with dinner I will begin on the G work.


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Offline

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