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topsquark
reacted to
Dr.Peterson's post
in the thread
Please advise how to solve this worded problem.
with
Like
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You refer to "this". If it means this year, 2019, then none of those choices is correct. Does the problem state what year it refers to?
A moment ago
MarkFL
replied to the thread
Set up, and evaluate the integral that represents the surface area of rotation of this cardioid about the y-axis.
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To follow up, let's let: u=\sin(\theta)+1\implies du=\cos(\theta)\,d\theta And our definite integral becomes: A=2\sqrt{2}\pi\int_0^2...
1 minute ago
topsquark
reacted to
MarkFL's post
in the thread
help in maths
with
Like
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The form \frac{\infty}{0} is not indeterminate, and is equivalent to the form \(\infty\). :)
1 minute ago
topsquark
reacted to
Dr.Peterson's post
in the thread
writing as a single fraction
with
Like
.
I believe you intended to write 5/(4x^2 - 25) - (2x+3) / ((4x^2+16x+15)/7). If so, your work is correct through 5/(4x^2 - 25) -...
1 minute ago
topsquark
reacted to
pka's post
in the thread
writing as a single fraction
with
Like
.
That is almost impossible to read. Is it \frac{{\frac{5}{{4{x^2} - 25}} - (2x + 3)}}{{\frac{{4{x^2} + 16x + 15}}{7}}}~??? I ask because...
2 minutes ago
pka
replied to the thread
Topology question
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What is the definition of the finite-closed topology? I know what the finite-complement topology on a set is. And the above theorem...
2 minutes ago
topsquark
posted the thread
History of Algebra
in
Math Odds & Ends
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I'm not sure how to do a search on this. I was recently looking over a post that mentioned something along the lines of "we didn't used...
3 minutes ago
Dr.Peterson
replied to the thread
writing as a single fraction
.
I believe you intended to write 5/(4x^2 - 25) - (2x+3) / ((4x^2+16x+15)/7). If so, your work is correct through 5/(4x^2 - 25) -...
3 minutes ago
S
suyogya
replied to the thread
help in maths
.
i know it should be approaching infinity but what about the contradiction i shown in my question
6 minutes ago
Jomo
replied to the thread
writing as a single fraction
.
If you think of this expression as having two sides you probably will think that you can multiply,divide, add or subtract the same...
9 minutes ago
S
suyogya
replied to the thread
help in maths
.
how?
10 minutes ago
topsquark
reacted to
Dr.Peterson's post
in the thread
Question on the restrictions on the range of inverse trigonometric functions
with
Like
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I'm not sure I understand. I think what you are really observing is that different sources define the inverse cosecant differently. It's...
12 minutes ago
topsquark
replied to the thread
Including the (0,0) point in linear regression
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That's a pretty good sized intercept if it's supposed to be 0! What are the scale of your x's? -Dan
13 minutes ago
topsquark
replied to the thread
Including the (0,0) point in linear regression
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Good point. I once did a regression on a linear function as y = mx + b for a model that forced y = mx. I thought it was a reasonable...
14 minutes ago
MarkFL
replied to the thread
help in maths
.
The form \frac{\infty}{0} is not indeterminate, and is equivalent to the form \(\infty\). :)
16 minutes ago
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