Official Homework Help & Discussions Thread.

Vanille Sky said:

O: I remember this from Grade 10! Electronegativity refers to an atom's tendency to attract electrons to itself.

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Well, thank you very much! :)

Use parenthetical citation.

There are several styles you can use to cite. MLA (the one you mentioned) is one, but you can also use APA and Chicago, though usually they're used for different purposes.

Everlark said:

How exactly does citing within a paper work? I know how a works cited page works, but how do you actually cite within the paper itself when like...quoting sources and such? MLA format, of course...honestly, are there any other formats? Ugh, don't answer that.

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I have absolutely no idea what "MLA" means, but this is how I've been taught to reference stuff. From an essay I wrote a while back:

"In contrast, the aldolase II enzyme has a lesser understood structure (Berry & Marshall, 1993)."

So in the essay I've made a statement, then briefly said whose work I got that information from. Then at the end of the paper in the references section:

Berry, A., Marshall, K. E. (1993), Identification of zinc-binding ligands in the Class II fructose 1,6-bisphosphate aldolase of Escherichia coli, Federation of European Biochemical Societies, 318:11-16

The order of things here's important. Names (Last, First Initial. Second Initial.) in the order that they appear on the paper followed by the year in brackets, the title of the paper exactly as it appears in italics, the publisher, the volume:the page numbers.

If you're citing in a different context such as quoting directly, you could say something like "Berry & Marshall (1993) say that "[blah]"" or whatever. But in general explaining something in your own words is a better idea since it shows that you understand what you're on about.

Your reference list at the end of the paper should be in alphabetical order.

Be aware that referencing wrongly, depending on how strict your university is on these kinda things, can get you in a fair deal of trouble and as I say I don't know if my format's the same as yours. If none of this looks familiar to you, please ask someone on your course or something first, since I don't wanna be getting you in trouble. Haha. Hope this helps though... I think it's what you're having trouble with at least. d:

edit: lol the above poster is talking about something totally different I think. I'm not familiar with any other referencing types than the one I explained here so maybe go with what they said if it means anything to you.

I'm pretty sure I was talking about the right thing, Razor Leaf. http://www.easybib.com/help/paren

For example, if I were to quote from 1984, it'd look something like this: "It was a bright cold day in April, and the clocks were striking thirteen." (Orwell 1)

Then you'd make a reference at the end of the paper in Works Cited/References section, which looks similar to what Razor Leaf posed.


About the other formats I've stated, these are what I'm talking about:

APA Format: https://owl.english.purdue.edu/owl/resource/560/01/ (Usually used for scientific lab reports, etc.)
Chicago Format: https://owl.english.purdue.edu/owl/resource/717/01/

What class are you writing your paper for?

Just drop it if it's completely irrelevent lol. Unless it still somewhat counts for future or you have minimum credit or something.

Also is she asking for primary sources? You'll probably need to search some sort of database to find sources if so.

Just find your newspaper website sources in whatever research database she has you using. 90% chance that if the research database is actually decent and up to date, they'll be there. Don't know if it'll meet the requirements, but it'll at least get one of your sources off of the internet.

I personally always had issues finding sources that weren't older than dirt on those darn databases, but I never had to use those after middle school.

I'm pretty sure I'm right, but I want to be sure, because I've always been a little hesitant when it comes to implicit differentiation (Calculus).

Question: Calculate (dy/dx) if 3x^4 + 3xy + 5y^4 = 10, and then find the equation of the tangent line to the graph of this equation at the point (1,1)

My work:
--Subtract 10 and differentiate each term so that:
-----3x^4 becomes 12x^3
-----2xy becomes 2x(dy/dx) + 2y via the product rule
-----5y^4 becomes 20y^3 * (dy/dx) via the chain rule

--Derivative looks like
-----12x^3 + 2x(dy/dx) + 2y + (20y^3)(dy/dx)

--Subtract the terms with (dy/dx), factor (dy/dx) out, and then divide to isolate, and you get (dy/dx) is equal to:
-----[12x^3 + 2y]/[-2x - 20y^3]

Then for the second part, you just find m by plugging in 1 for both x and y, and that is simple enough, I'm sure. Thanks for the check. :D

There's this other question that's stumping me though:

Evaluate as the limit approaches zero for [(x)*(sin 11x)]/(sin 7x)^2

Ooh, something I can actually help with!
Is the second term 3xy or 2xy? If it is 2xy your differentiation is correct, and if it is 3xy you should be safe with just replacing the two coefficient 2's in your derivative with 3's.
As for the limit, when you plug in x=0 you get indeterminant in the form of 0/0, so you use L'Hospitals rule to find the limit. Basically for L'Hospitals, if the limit is indeterminant (most common is probably 0/0) you can still solve it by differentiating the numerator and denominator separately, then taking the limit of the derivatives divided by each other. So for this particular problem, you differentiate xsin11x and then differentiate sin^2(7x), then plug in x=0 to determine the answer. However, when you plug in x=0 you still get 0/0, so you repeat L'Hospitals until you are able to plug in 0 and get an answer. You should get an answer with using L'Hospitals rule twice, and I got 11/49 when I worked it out.

Gulpin said:

Ooh, something I can actually help with!
Is the second term 3xy or 2xy? If it is 2xy your differentiation is correct, and if it is 3xy you should be safe with just replacing the two coefficient 2's in your derivative with 3's.
As for the limit, when you plug in x=0 you get indeterminant in the form of 0/0, so you use L'Hospitals rule to find the limit. Basically for L'Hospitals, if the limit is indeterminant (most common is probably 0/0) you can still solve it by differentiating the numerator and denominator separately, then taking the limit of the derivatives divided by each other. So for this particular problem, you differentiate xsin11x and then differentiate sin^2(7x), then plug in x=0 to determine the answer. However, when you plug in x=0 you still get 0/0, so you repeat L'Hospitals until you are able to plug in 0 and get an answer. You should get an answer with using L'Hospitals rule twice, and I got 11/49 when I worked it out.

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Extremely late with this, but thank you so much <333 I'm guessing I use this for trig limits, eh?

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