Posted: 6/17/2002 4:26:56 PM EDT
[Last Edit: 6/17/2002 4:28:34 PM EDT by Sweep]
Trying to convince the wife that the answer in the back of her book is wrong!
f(x)=x^2  2x + 7
Solve for f(1).


Why buy the cow when the neighbor's cat is in heat?

10


"In Texas , even the vegetables are made of meat"  Lyle McDonald

Originally Posted By zoom:
10 View Quote 

Why buy the cow when the neighbor's cat is in heat?

I say 10 as well. What are you getting and why?



a negative times a negative is a positive. i.e. (1)^2 = (1)*(1) = 1
and (2)*(1) = 2
therefore, 1+2+7 = 10
Keving67



I got 10 as well.


"I come in peace. I didn’t bring artillery. But I’m pleading with you, with tears in my eyes: If you fuck with me, I’ll kill you all." General James N. Mattis

Sweep,
(1)^2 = +1
2(1) = +2
Therefore,
f(1) = (1)^2  2(1) + 7
f(1) = 1 + 2 + 7
f(1) = 10
Don't see how it can be anything else. If you came up with something else, I submit that you made an error. Perhaps if you "show your work," we can determine where you went wrong.



I got 10 too.
What do you get if you intergrate that function?


"The problem with Socialism is that you eventually run out of other people's money." Margaret Thatcher

8
Here's why:
1^2 = 1 because it's actually (1)^2 or 1(1)^2
In the original function, if 1^2 was to come out as +1, it should be (x)^2  2x + 7.
If it was (1)^2, then it would come out as 10, but there's nothing to indicate the "" is inclusive in 1^2, therefor I say 8!
The reason I say this is because I got a very similar problem like this wrong on an exam in my college algebra class. The professor convince me this was the correct way to square negative numbers.
Don't tell me for the past 10 years I've been living a lie!


Why buy the cow when the neighbor's cat is in heat?

Originally Posted By JIMBEAM:
I got 10 too.
What do you get if you intergrate that function? View Quote 


Originally Posted By Sweep:
1^2 = 1 because it's actually (1)^2 or 1(1)^2
View Quote 


Originally Posted By Sweep:
8
Here's why:
1^2 = 1 because it's actually (1)^2 or 1(1)^2
In the original function, if 1^2 was to come out as +1, it should be (x)^2  2x + 7.
If it was (1)^2, then it would come out as 10, but there's nothing to indicate the "" is inclusive in 1^2, therefor I say 8!
The reason I say this is because I got a very similar problem like this wrong on an exam in my college algebra class. The professor convince me this was the correct way to square negative numbers.
Don't tell me for the past 10 years I've been living a lie! View Quote 


[b]
Originally Posted By Sweep:
8
Here's why:
1^2 = 1 because it's actually (1)^2 or 1(1)^2
In the original function, if 1^2 was to come out as +1, it should be (x)^2  2x + 7.
If it was (1)^2, then it would come out as 10, but there's nothing to indicate the "" is inclusive in 1^2, therefor I say 8!
The reason I say this is because I got a very similar problem like this wrong on an exam in my college algebra class. The professor convince me this was the correct way to square negative numbers.
Don't tell me for the past 10 years I've been living a lie! View Quote 

Our American DreamsFreedom and the Constitutionare lost day by day.. Adaptability is the key to survival. 
Dude, your mathematics teacher screwed you up... OUCH....



Well, all I gotta say is the old man is lucky I still got an A in that class! ( avg. 89.75). I remember all this so vividly because we argued about it for over an hour after class the day we got our exams back.
It was a 10 point problem! I was bucking for an A, and if I had ended up with a B, and you guys telling me that I was right to begin with, I'd track him down and give him a good swift kick in the shin!
Plus, now I got to listen to the wife giving me crap!


Why buy the cow when the neighbor's cat is in heat?

(1)^2 is the same as (1)*(1) both equal 1


"The problem with Socialism is that you eventually run out of other people's money." Margaret Thatcher

The solution is 10.
edited for bad typing


"I come in peace. I didn’t bring artillery. But I’m pleading with you, with tears in my eyes: If you fuck with me, I’ll kill you all." General James N. Mattis

I took calculus in high school, and if I get something like this wrong, my teacher, if still around, would probably smack me on the head!
I can guarantee you that everybody else is right. 10 is the answer.



Thanks for the help guys.
But for the record, if you just have 1^2, is it considered (1^2) which will = 1?
I know there is something like that.


Why buy the cow when the neighbor's cat is in heat?

Originally Posted By Sweep:
Thanks for the help guys.
But for the record, if you just have 1^2, is it considered (1^2) which will = 1?
I know there is something like that. View Quote 

I am more than what I have done in the past. I am more than what I am doing now.
Those who enjoy freedom have a moral obligation to use that feedom for those who do not possess it.  Bernard Lewis "Other People's History" 
i got ten. and yes, sweep, you would get 1 for your second question if it were (1)



10



But for the record, if you just have 1^2, is it considered (1^2) which will = 1? View Quote 

"In Texas , even the vegetables are made of meat"  Lyle McDonald

Hey Sweep,
I got 8.
J/K....[:D] Puahahaha!!



Originally Posted By Sweep:
Thanks for the help guys.
But for the record, if you just have 1^2, is it considered (1^2) which will = 1?
I know there is something like that. View Quote 


Originally Posted By reddon:
(1)^2 is not considered the same as the (1^2).
(x^2) is considered 1*(x^2), so for any real number x, the solution is negative, as you indicated. Without the parenthesis it is considered (1)^2.
A basic algebraic rule is that for any number (positive or negative), when it is squared the result is only positive. This is used often in formula to ensure that you do not try to get square roots of negative numbers.
Which brings up something to help stir your memory: what is the square root of a negative number? It may be vague memories if this which is causing you grief. That is noted by the lower case "i", where "i" = SQRT(1), and is called an imaginary number. Are the painful memories coming back yet?[}:D] View Quote 

Why buy the cow when the neighbor's cat is in heat?

Oh, here's one for ya: When does x^0 not = 1? [:D]


Why buy the cow when the neighbor's cat is in heat?

x=0



I got ten also.
But I copied off of Zoom.



The correct answer for everything is 42. [:D]



Originally Posted By Mute:
The correct answer for everything is 42. [:D] View Quote 

"The problem with Socialism is that you eventually run out of other people's money." Margaret Thatcher

Originally Posted By JIMBEAM:
Originally Posted By Mute:
The correct answer for everything is 42. [:D] View Quote View Quote 

"I come in peace. I didn’t bring artillery. But I’m pleading with you, with tears in my eyes: If you fuck with me, I’ll kill you all." General James N. Mattis

A billion.
What do I win?
TheRedGoat


Uncle Ruckus is my hero.

Originally Posted By Sweep:
8
Here's why:
1^2 = 1 because it's actually (1)^2 or 1(1)^2
In the original function, if 1^2 was to come out as +1, it should be (x)^2  2x + 7.
If it was (1)^2, then it would come out as 10, but there's nothing to indicate the "" is inclusive in 1^2, therefor I say 8!
The reason I say this is because I got a very similar problem like this wrong on an exam in my college algebra class. The professor convince me this was the correct way to square negative numbers.
Don't tell me for the past 10 years I've been living a lie! View Quote 


I got Klingon....
Scott
[beer]



I got an answer that proved Einstein was dumb as post.....
But my dog ate the paper..... [:D]


"We live in an era where nothing is a surprise and everything is an outrage."  Rush Limbaugh
"What is odd is to have a president so convinced of his own magnificence –– yet not of his own country's."  Charles Krauthammer 
Originally Posted By Sweep:
Oh, here's one for ya: When does x^0 not = 1? [:D] View Quote 

"We live in an era where nothing is a surprise and everything is an outrage."  Rush Limbaugh
"What is odd is to have a president so convinced of his own magnificence –– yet not of his own country's."  Charles Krauthammer 
Originally Posted By USNA91:
Originally Posted By Sweep:
Oh, here's one for ya: When does x^0 not = 1? [:D] View Quote View Quote 


I doubt it. You can't really plug infinity into an equation since it's not really a number.


"We live in an era where nothing is a surprise and everything is an outrage."  Rush Limbaugh
"What is odd is to have a president so convinced of his own magnificence –– yet not of his own country's."  Charles Krauthammer 
Okay, I'll admit stupidity. I know what > means, and what < means, but what is the ^ symbol in x^2


So why am I still in the game? I like being outdoors. I like the people I shoot with. I like hearing the gun go bang.

^ is a carrot. it means exponents so x^2 would mean x²


"I come in peace. I didn’t bring artillery. But I’m pleading with you, with tears in my eyes: If you fuck with me, I’ll kill you all." General James N. Mattis

Ok my turn, how will any of this shit help your child get a job later in life?
anyone?
[beer]



Originally Posted By HighlandMac:
Ok my turn, how will any of this shit help your child get a job later in life?
anyone?
[beer] View Quote 


Originally Posted By BostonTeaParty:
Originally Posted By HighlandMac:
Ok my turn, how will any of this shit help your child get a job later in life?
anyone?
[beer] View Quote View Quote 


Originally Posted By BostonTeaParty:
Originally Posted By HighlandMac:
Ok my turn, how will any of this shit help your child get a job later in life?
anyone?
[beer] View Quote View Quote 

"The problem with Socialism is that you eventually run out of other people's money." Margaret Thatcher

if it was:
f(1) = x^2  2x + 7 it be 8 but when you plug 1 in x its like a built in parenthesis so you get f(1) = (1)^2  2(1) + 7 = 10
Either you don't recognize the problem when you took it in math class or you got screwed out of 10 points and the teacher isn't bright...



Algebra is simply a tool of deductive logic developed by mathematicians to simplify the math. Personally, I didn't like the way math was taught, because algebra stresses one aspect of logic, and have relatively fixed rules in the way most algebraic equations are solved in school. I think they should teach algebra and geometry simultaneously along with number theory to high school students. It develops their mathematical skills more comprehensively that way.



Originally Posted By USNA91:
I doubt it. You can't really plug infinity into an equation since it's not really a number. View Quote 


Yeah well Cantor also introduced unbounded sets. I wonder what this guy would have to say about that.
[img]http://wwwgap.dcs.stand.ac.uk/~history/BigPictures/Russell_5.jpeg[/img]



Originally Posted By HighlandMac:
Ok my turn, how will any of this shit help your child get a job later in life?
anyone?
[beer] View Quote 

Why buy the cow when the neighbor's cat is in heat?

Hey, nobody's perfect (he also died in a nut house).



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