Needing a math wizz. :D

[Teffah 5]

She is gonna be here soon, so I will be preparing

Oh, and nevermind, CM, I did a little scribbling on a napkin and figured out the bra popping formula, where you simply calculate the woman's breast mass by inverting the Laplace Transforms, and by dividing by two the properties of the limits, derivatives and integrals of the density or perkiness of the bazooms. Heck, here is the formula, it speaks for itself.

Mercy... I will turn that in on my next class and see if I can get some extra credit.

[ScottThuy 140]

Lets hope the class is statistics or research methods..

[Niels Bohr 72]

?

Its okay, you can just say I don't know.

[Jenn! 918]

From what I know inorder to make it undefined it has to be any other number besides 9 and -2... but not sure.

No, caybee is right. If x is 9 or -2, the denominator is zero, which makes the expression undefined. The answer as it is in the attachment is as if the question asked for which values of x is the expression NOT undefined.

[Niels Bohr 72]

Simple probability math. Laplace is easy. The hard problem would be the Gaussian surface with electromagnetics.

And, when you include Random Processes into the field. It gets all messy.

Mercy... I will turn that in on my next class and see if I can get some extra credit.

[ScottThuy 140]

It is faster. I can do these factors without using completing the square. There are shortcuts. Just like computing huge matrixes. Using dynamic programming, you can figure out ways of using a table to store known data instead of re-computing the same data. This eliminates multiple FOR loops, and recursive algorithm which would take more time than dynamic programming.

I taught CP for many years and for some reason there was no Algebra Pre-Req... so a good many students learned algebraic logic real fast...

Simple probability math. Laplace is easy. The hard problem would be the Gaussian surface with electromagnetics.

And, when you include Random Processes into the field. It gets all messy.

'Random'?

Is anything really Random?

[Teffah 5]

No, caybee is right. If x is 9 or -2, the denominator is zero, which makes the expression undefined. The answer as it is in the attachment is as if the question asked for which values of x is the expression NOT undefined.

Hmm.. all the examples I practiced put their answers not equal to whatever the answer was. Now I am confused, but I see your point. Thanks

[SuperDuper! 230]

'Random'?

Is anything really Random?

Yes, like the way some US Consulates grant visas or not.

Edited January 18, 2010 by Hopp

[I AM NOT THAT GUY 5,715]

I taught CP for many years and for some reason there was no Algebra Pre-Req... so a good many students learned algebraic logic real fast...

'Random'?

Is anything really Random?

You mean like P(t_n) = R(t_n-1)dt?

Edited January 18, 2010 by Lone Ranger

[Niels Bohr 72]

With computers, we use a BILBO/BIST device to generate pseudo-random numbers. It's not quite random. But, depending on different ways we tap the output of a Q-flip flop and OR it into a MUX, we can generate a syndrome. The syndrome is random, but, unique in that it can be obtainable is the output of the same flip flops are OR'ed together.

Computers cannot actually generate random numbers. But, random process are used in noise analysis with communications or signal processing. It's a random variable that varies with time. When you send an FM/AM/QAM/PWM signal you will obviously get a problem with noise. What electrical engineers do is they build different demodulation schemes to compensate for the noise within the hardware. To do that, we need to understand noise. When an electromagnetic wave propagates through the air, it's okay, nothing is loss. But, at the receiver end is the problem. Noise are rampant within the electrical circuits. It can be caused by noisy resistors.

I'm turning this thread into a science classroom.

Edited January 18, 2010 by Niels Bohr

[I AM NOT THAT GUY 5,715]

You can get a fairly random generator by constantly changing the seed to something that varies, such as the clock function, and then shuffling the arrays produced. Not perfect, but close enough.

[SuperDuper! 230]

You can get a fairly random generator by constantly changing the seed to something that varies, such as the clock function, and then shuffling the arrays produced. Not perfect, but close enough.

What's this fuss about true randomness?

Perhaps you have wondered how predictable machines like computers can generate randomness. In reality, most random numbers used in computer programs are pseudo-random, which means they are a generated in a predictable fashion using a mathematical formula. This is fine for many purposes, but it may not be random in the way you expect if you're used to dice rolls and lottery drawings.

RANDOM.ORG offers true random numbers to anyone on the Internet. The randomness comes from atmospheric noise, which for many purposes is better than the pseudo-random number algorithms typically used in computer programs. People use RANDOM.ORG for holding drawings, lotteries and sweepstakes, to drive games and gambling sites, for scientific applications and for art and music. The service has existed since 1998 and was built and is being operated by Mads Haahr of the School of Computer Science and Statistics at Trinity College, Dublin in Ireland.

www.random.org

[Teffah 5]

Would help the OP to show how you got that answer.

That term is (X^2 + X - 12)

for factoring take the square root of the first term, and look for integers in the last term, so that the middle term is the is twice the product of the the two terms in each set.

like (x+/-) (x+/-) with possible integers of (-12), 1, 12;, 2, 6; 3, 4. with either the first or second number having a negative sign in front of it. With practice, this comes quicker, but since the coefficient of the center X term is 1, the difference between the two integers has to be 1, the only set with that difference is 3 and 4, and since the center term is positive, the 4 has to be positive and the 3 negative so their product is a -12.

Therefore, (x+4)(x-3) is the only possible solution when multiplied out equals, x^2 -3x +4x -12 or (X^2-x-12).

It takes practice. I cheat with Mathcad, a TI-89, simulation programs, as nobody want to pay an engineer minimum wages to work math out by hand.

I see where I made my error. I was thinking addition and not multiplication. Thanks!! I have a TI-98 too, but the battery is dead and I don't know how to work it. Lot of good it does me! Also, for the test we will not be able to use it, so I might as well learn now.

[Teffah 5]

You mean like P(t_n) = R(t_n-1)dt?

Seriously?! That's scary.

[Amby 490]

Seriously?! That's scary.

nooooooo it's not scary and I'm not even nerdy enough for this thread this is a consolemaster dream thread

Edited January 18, 2010 by Amby