Math help!

[mcheddadi]

Ok guys, My GF has this prob, and I tried helping her but I'm stuck...anyone think he can help me ?

I have this equation that I need to simplify to the maximum:

the max I can do is this:

but the max simplification is supposed to be this:

arg this is driving me nuts!

[AppleBonker]

Dude, you're there. I am not making images, but the next step is:

Multiply by the number 1

In this case, 1 = [10*root(3) + 6*root(5)]/[10*root(3) + 6*root(5)]

Gives you [480 + 120*root(15)]/120

Simplify and done!

[AppleBonker]

Hopefully that made sense. I can draw it out if you can't visualize the script. Lemme know!

[mcheddadi]

THX!!! I think thats called rationalizing a fraction right? damn I totally forgot about that...

[480 + 120*root(15)]/120 =4+root(15)

Oh lawd I feel stupid... thanks man!!

[AppleBonker]

I don't know what it's called, just how to do it. Glad it's all worked out!

[PapaSmurf2k3]

The real answer is: 7.8729833462074168851792653997824

No, I'm not kidding. Who the eff uses that reduction and simplification crap anyway? NO ONE. Get a real number, and then profit.

[PEZi]

i have a test tomorrow... anyone wanna teach me calc 3 in an hour or less???

[MinisterofDOOM]

Get a real number, and then profit.

[240marcuSX]

i have a test tomorrow... anyone wanna teach me calc 3 in an hour or less???

What topics are on the test?

[numbnuts240]

i have a test tomorrow... anyone wanna teach me calc 3 in an hour or less???

[PEZi]

What topics are on the test?

lol... too late already took it

but it was on partail derivitives... directional derivitives.... tangent planes... implicit differentiation.... max and mins in 3D.... that sorta stuff

[hannibal]

^ Fun stuff!

For the record, I tutor math. Always looking for new students...

[elwesso]

Yes calculus is predominantly trickery... Fortunately TI-89 is equipped for said sorcery.

[AppleBonker]

^ This. I am still amazed that I was allowed to use the 89 on the advanced placement calculus exam. Some of the calculator section questions were purely derivatives and integrals. Sure, they could be done by hand, but the calculator was much faster. And somehow, they claimed that the 89 didn't give an advantage over other calculators like the 83...

[Mr1der]

do you still wear diapers?

I don't get the point of letting students take a test with a crutch.

that's like letting the fat kid run the marathon on a moped.

YOU'RE MATH WON'T SAVE THE WORLD WHEN THE BATTERIES RUN OUT!

[AppleBonker]

Agreed. But, when it's offered, I will gladly take any advantage that is granted to me.

[elwesso]

in all fairness on the job site its more important that the answer is correct, not that you actually know how to do it.

Besides, you have to have half a clue what to do in order to punch it in the calculator, because theres many times the calculator cant do something..

Bonker, where did you go to school? I am a senior at tri-state for ME.

[AppleBonker]

Very true that the job site requirements are far different than testing. IMO, calculators should rarely be used on most math tests. If you can understand how to actually do the calculations, it's a heck of a lot easier to know when the calculator is spitting out something senseless (like if you typed something wrong).

Tri-State University? Not trying to be mean, but I had no idea what that was until I looked it up. Is it a solid engineering school? I'm not too knowledgeable on smaller schools unless they have some good sports programs, or if I have friends/family that attended. I actually went to University of Illinois for materials science and engineering (otherwise known as MatSE of MSE). The smallest school I applied to was Rose Hulman. Other than that, pretty much every school I looked at was in the Big Ten. I got into all of them, but couldn't justify the cost over state school tuition. Would I be correct in assuming TSU is private?

[Dattebayo]

Gee, you really sound stuck up right there man.

[elwesso]

I didnt get to use anything but a scientific calculator for calc I-calc III, they finally let us in differential equations. With that said, I've put my time in doing stuff by hand.. Also, on most of my upper level classes they still want to see the stuff worked out, but the calculator is nice to check for errors..

yeah tri-state is private, a little smaller than Rose but half the price, but actually Ive heard from many sources that many companies like TSU grads better than rose because TSU has more humanities and english requirements. For how big our school is, we've got some pretty nice facilities... a full foundry with 3 furnaces (2 induction, 1 combustion), a full machine shop, a supersonic and subsonic wind tunnel..

[AppleBonker]

Gee, you really sound stuck up right there man.

Yeah, I didn't mean to, but it was pretty unavoidable. I just meant to say that I didn't have the time to investigate the thousands of universities throughout this country. I find it funny that a state school grad would come off as stuck up though. U of I might have a good engineering school, but I don't know that I would call it one of the nation's premier universities in general. Additionally, I can't take too much credit for any of my accomplishments. That all goes to genetics and my parents then raising me right, on top of the absolutely amazing schools I was privileged to attend from K-12. So, my apologies if I sounded conceited.

elwesso, I got out of calc 1 and 2 from AP tests. I don't think I was allowed any calculator for most tests in calc 3, but I don't really remember. Most of the other classes didn't care because (as I'm sure you've noticed), the test questions don't really tell you what equations you need to use. You need to understand the problem to know what math work needs to be performed. And, like you said, they almost always want to see the work on paper.

Yeah, not to bash the school, but RH didn't really appeal to me. As an engineering only school, it was mostly guys. And, of the 10% or so girls that I saw walking around on campus when I visited, 75% probably could've just about passed as guys. I looked at your school's website, and it looks like a solid place to study. There are definitely some advantages to being at a smaller school. I think I had some lectures that were nearly your school's entire enrollment. It's a lot easier to get lost in the crowd.

Since I'm not in a position to hire degreed engineers, I'm not to sure what those folks look for in terms of degrees. Though, your argument makes sense. It's far better to be a well-rounded candidate than someone who is just a numbers cruncher. If you're the smartest guy in the world, but you have the personality of the chair I'm sitting on, it might be hard to score a good job. Since you're almost out, what are you looking at after college? Did you have any internships or co-ops that you're planning on using for employment? Or are you planning on continuing your education?

[elwesso]

Since you're almost out, what are you looking at after college? Did you have any internships or co-ops that you're planning on using for employment? Or are you planning on continuing your education?

I had internships the last 2 summers... I cant say I'll be using them directly because Im kinda looking to get into the power industry... Im hoping to hear back from NIPSCO in the next week or 2.. ive got a few other options to look into...

[AppleBonker]

Sounds cool. I've got an uncle who works for ComEd in Illinois. He's had his issues, but I think he likes it overall. Also, NIPSCO seems to charge a bit more than ComEd for services, so I hope that is transferred along to the employees. It would seem that the power industry could provide some really challenging yet rewarding opportunities. Best of luck!

[Pieceofsand]

how many of you are asians? j/k

college algebra is kicking my a**, i can't imagine cal 3. what do you major in man?

[Dattebayo]

I'm asian.

[Mr1der]

are you Scotch-Korean?

[Dattebayo]

Cauc-asian.

HA!

[PEZi]

how many of you are asians? j/k

college algebra is kicking my a**, i can't imagine cal 3. what do you major in man?

mine is mechanical engineering.... and no... i'm nowhere near asian

[Razi]

I am asian and I approve of this thread.

[Bmore-coupe]

just memorize this song and everything will be clear to you.

http://pi.ytmnd.com/