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MATH 141 – GOODIES
FOR MIDTERM 2
(FALL 2023)
Email me (I
encourage corrections!). HOME
FREE ONLINE GRAPHERS!
Try these graphing
links:
(Use shift-6 “^” for
exponentiation.)
(Put restrictions in { }.)
(This has more with 3D
graphing. Try entering z = x^2 + y^2 and x^2 + y^2 + z^2 = 1)
FUN CLASS LINKS
2.4: i speaks
2.5:
Schoolhouse Rock! videos:
2.5: My Hero,
Zero
https://www.youtube.com/watch?v=6eh8Ml-ruO0
2.5: A rendition
by The Lemonheads! (same captions as
above)
https://www.youtube.com/watch?v=yGF03OlWLYw
In memory of:
Bob Dorough
(1923-2018)
2.6: Rational Graphs (HAs):
https://www.onlinemathlearning.com/image-files/xhorizontal-asymptote.png.pagespeed.ic.kp0hm1tokA.png
3.1: Inflation Calculator: https://www.usinflationcalculator.com
3.1: Coronavirus Cases
Deaths and Cases (CNN):
https://www.cnn.com/2021/01/22/health/us-coronavirus-friday/index.html
Vox on Asia (Omicron)
https://www.vox.com/22977354/covid-19-outbreak-omicron-ba2-hong-kong-south-korea-china-asia-vaccine
3.1: e
3.1: Dr. Evil (the
"Austin Powers" series) too greedy:
https://www.youtube.com/watch?v=1z-AxgueBRk
Note: Actually, the GDP of
the U.S. was a bit over $1 trillion in 1969.
3.2: Log song:
https://www.youtube.com/watch?v=-fQGPZTECYs
3.2: Chemistry joke (pH -
common logs): attached.
https://www.reddit.com/r/Bossfight/comments/10nd082/dihydrogen_monoxide_archenemy_of_hydrohomies/
3.3: LOG LAWS
https://i.pinimg.com/736x/7b/b6/7e/7bb67e9d2a4bcff3dedfeb1e6b86982b.jpg
3.3: With great power … (don't abuse the Power
Rule!)
https://www.youtube.com/watch?v=_5d6rTQcU2U
GOOGLE "POPULATION OF CHINA"
• Observe that the population of India has been
mostly increasing at an increasing rate; the graph is mostly concave
up. (The "second derivative" is positive.) In other
words, the rate of change (the first derivative) is increasing.
• Observe that the population of China has been
mostly increasing at a decreasing rate; the graph is mostly concave
down. (The "second derivative" is negative.) In
other words, the rate of change (the first derivative) is decreasing.
• In both cases, the populations have been
increasing; the first derivative of population with respect to time is positive
in both cases.
3.4/3.5: NEWTON'S LAWS OF COOLING AND HEATING
https://en.wikipedia.org/wiki/Newton%27s_law_of_cooling
FOR FUN
• "Family Guy" on y2k:
https://www.youtube.com/watch?v=gOMp3eBE_8A
• Bill Maher on "Global Swarming"
(Warning: Profanity):
https://www.youtube.com/watch?v=HB97iwcm_Qc
• "MythBusters" on exploding water:
https://www.youtube.com/watch?v=1_OXM4mr_i0
• Zipf’s Law / Zipf’s Mystery (Math and reality!)
https://www.youtube.com/watch?v=fCn8zs912OE&t=394s
HOME (all classes) MATH 141 HOME
Email me (I
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