Friday, April 14, 2017
I made a boo-boo
I forgot to assign section 12.7--spherical integrals. Now due next Friday, *BUT* you have an exam on the topic on Wednesday, so I'll give you quiz with a question on that topic on Monday
Thursday, April 13, 2017
13.3#9
This problem on the 13.3 webwork is providing to be a pain. I am unable to figure out how to solve for the answers of b,c and d. I have tried taking a vector between the two points and then tried taking the magnitude of the change in x and y when going from P to Q. Is there something I am missing
when it comes to getting this problem completed and correct
*****************************
So, you're missing a basic theoretical fact about the line integrals of gradient vector fields (which is discussed in the textbook and in the lecture notes. You are paying a lot of money for these things, when you can't do a problem it is highly recommended to look at them. You would be likely to get an answer quicker than I'll get around to giving it to you, and since time is money you're paying extra for the wait.) The theoretical fact you need is that the fundamental theorem of calculus applies to the line integrals of gradients: ∫_Γ ∇f∙dr = f(r_2) - f(r_1) where r_1 and r_2 are the initial and final points of the curve Γ. This means that your answer is the difference of the values of the function on the initial and starting contour. For example the answer to (b) is 34-38 = -4.
when it comes to getting this problem completed and correct
*****************************
So, you're missing a basic theoretical fact about the line integrals of gradient vector fields (which is discussed in the textbook and in the lecture notes. You are paying a lot of money for these things, when you can't do a problem it is highly recommended to look at them. You would be likely to get an answer quicker than I'll get around to giving it to you, and since time is money you're paying extra for the wait.) The theoretical fact you need is that the fundamental theorem of calculus applies to the line integrals of gradients: ∫_Γ ∇f∙dr = f(r_2) - f(r_1) where r_1 and r_2 are the initial and final points of the curve Γ. This means that your answer is the difference of the values of the function on the initial and starting contour. For example the answer to (b) is 34-38 = -4.
Monday, April 10, 2017
Friday, April 7, 2017
Saturday, April 1, 2017
More on the extra credit assignment
Here's the blog post I made a couple weeks ago:
To update:
1) Let's make it fewer words, say 600 words. This is not to make it easier for you to bullshit your way through the assignment, this is to force you to make it more clear and more concise.
2) This assignment is worth ten exam points.
3) Format:
a) Double spaced.
b) IEEE format for citations and references.
c) Times New Roman font
4) You need to research this. This means that you need to figure out what the engineers that graduate with your major actually do for a living.
a) Go to the section of Noble Library with books on that topic. If it's a technical book it will probably have equations in it. Is it multivariable calc? Keep looking until you find some. CITE THESE.
b) Look at the professional journals in that discipline, scan a few articles in them. They will likely make no sense to you. Keep at it until you find some multivariable calc. CITE THESE.
c) Citations to personal conversations with working engineers are good, provided that you provide a linked in page to document their professional status. Get references from them, and go look it up.
5) Time has been flying by. Let's make the new due date April 20.
6) I want all assignments delivered to me *ON* the due date, *BOTH* by email as an word searchable *PDF*, and as printed and bound (just stapled is fine) hard copy delivered to the front desk in the upper division math office in WXLR/PSA 216 during business hours; ask the staff at the desk to put your assignment in my mailbox.
Hi, I'd like to offer an extra credit assignment. In general terms it would involve a properly formatted & properly cited, non-plagiarized 1000 word essay on what impact multivariable calculus has on your particular chosen career. Details to follow--but you could google the words in this post that you don't already understand.
To update:
1) Let's make it fewer words, say 600 words. This is not to make it easier for you to bullshit your way through the assignment, this is to force you to make it more clear and more concise.
2) This assignment is worth ten exam points.
3) Format:
a) Double spaced.
b) IEEE format for citations and references.
c) Times New Roman font
4) You need to research this. This means that you need to figure out what the engineers that graduate with your major actually do for a living.
a) Go to the section of Noble Library with books on that topic. If it's a technical book it will probably have equations in it. Is it multivariable calc? Keep looking until you find some. CITE THESE.
b) Look at the professional journals in that discipline, scan a few articles in them. They will likely make no sense to you. Keep at it until you find some multivariable calc. CITE THESE.
c) Citations to personal conversations with working engineers are good, provided that you provide a linked in page to document their professional status. Get references from them, and go look it up.
5) Time has been flying by. Let's make the new due date April 20.
6) I want all assignments delivered to me *ON* the due date, *BOTH* by email as an word searchable *PDF*, and as printed and bound (just stapled is fine) hard copy delivered to the front desk in the upper division math office in WXLR/PSA 216 during business hours; ask the staff at the desk to put your assignment in my mailbox.
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