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FactChecker's latest activity
FactChecker
replied to the thread
Taylor's Theorem for finding error for Taylor expansion
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This is an exercise to learn how to use Taylor's Theorem in a familiar situation where ##\sqrt 8## is known and easily obtainable with...
Today, 10:42 AM
FactChecker
reacted to
Office_Shredder's post
in the thread
Ratio test proof
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Like
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A good starting point is to compare it to a geometric series. For example if ##c=1/3## can you think of a series that converges whose...
Yesterday, 10:17 AM
FactChecker
replied to the thread
Find f s. t. ||f||=1 and f(x) < 1 with ||x||=1
.
Sorry. I didn't see that you already had a similar example for what you call Case #2. I thought that you were trying to prove that was...
Sunday, 9:09 AM
FactChecker
reacted to
marcusl's post
in the thread
I
What branch of electrical engineering uses a lot of probability?
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+1 for Wozencraft and Jacobs. I also suggest that you look into information theory, which uses probability theory heavily and which is...
Saturday, 8:18 PM
FactChecker
replied to the thread
Find f s. t. ||f||=1 and f(x) < 1 with ||x||=1
.
Consider ##f(y) = 1-y^2## and set ##y \equiv |x|##. It will have its maximum at ##x=0## and equal 0 if ##|x| = 1##.
Saturday, 8:14 PM
FactChecker
reacted to
gwnorth's post
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Should I double up on math courses next school year?
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Class is class. You don't have to "vibe" with your classmates. You're there to learn the material. Outside of class time is your time to...
Saturday, 9:51 AM
FactChecker
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DennisN's post
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Stargazing
My photo of Jupiter (I think)
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Hi, here's an excellent guide which you may find useful: A Guide to Smartphone Astrophotography (NASA)...
Friday, 5:52 PM
FactChecker
replied to the thread
I
What branch of electrical engineering uses a lot of probability?
.
Electrical engineering is applicable in so many diverse fields that there are a multitude of possibilities. In the field that I am most...
Friday, 10:42 AM
FactChecker
reacted to
berkeman's post
in the thread
I
What branch of electrical engineering uses a lot of probability?
with
Like
.
Communication theory, and application of that theory to signal encoding/decoding.
Friday, 10:31 AM
FactChecker
reacted to
sbrothy's post
in the thread
Python
Question about learning programming
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Programming is not an exact science like for instance math. There are languages designed for different problems. Procedural, functional...
Thursday, 1:21 PM
FactChecker
replied to the thread
Why can't a critical point of a system of DEs be complex?
.
Those basic principles are applied in very large systems. For instance, in fighter aircraft flight control development, the equations of...
Thursday, 1:19 PM
FactChecker
replied to the thread
SATA NAND SSD vs NVMe M.2 — Which one has a higher lifespan?
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Good point. But the OP ran into trouble long before that with the normal DVDs. For important information, data can be retrieved long...
Thursday, 11:07 AM
FactChecker
reacted to
Tom.G's post
in the thread
SATA NAND SSD vs NVMe M.2 — Which one has a higher lifespan?
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Like
.
Good luck finding a drive to read them after a century! The drives you have will have died from degradation of the plastics and...
Thursday, 10:59 AM
FactChecker
replied to the thread
Why can't a critical point of a system of DEs be complex?
.
That is an excellent question. In this case, it is assumed that only real values for x and y have a physical interpretation so the...
Thursday, 10:56 AM
FactChecker
reacted to
pasmith's post
in the thread
Why can't a critical point of a system of DEs be complex?
with
Like
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If you are willing to accept complex valued solutions, then fixed points can obviously be nonreal. One can always regard a system in...
Thursday, 10:39 AM
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