-
-
-
Desire to be a vessel of honor unto the Lord Jesus Christ?
Join Hidden in Him and For His Glory for discussions on how
https://christianforums.net/threads/become-a-vessel-of-honor-part-2.112306/
Math
- Thread starter Angel
- Start date
tim-from-pa
Member
- Aug 4, 2005
- 4,716
- 436
I am taking a college mathematics course, and I keep dreaming about solving problems...:
Doing mathematics can do that to you since it's a very intense type of thinking, so can playing too much chess I used to see rooks all over in my dreams. It's like a song stuck in your head and you have to change your pattern of thinking before bed, but it can be done.What kind of math are you taking?
Milk-Drops
Member
- Apr 10, 2012
- 7,206
- 1,077
Last edited by a moderator:
Nick
Member
- Feb 27, 2009
- 14,527
- 464
I LOVE xkcd! :bounce
Milk-Drops
Member
- Apr 10, 2012
- 7,206
- 1,077
whatever gives me the energy to outrun the raptors. 8)
That was funny MeatballSub.
So is that what you get when you go to Subway? LOL
Milk-Drops
Member
- Apr 10, 2012
- 7,206
- 1,077
It's been a pleasure of mine since I left high school. Bloody good show!
I LOVE xkcd! :bounce
Pizzaguy
Member
- Jan 19, 2011
- 2,907
- 6
I didn't go far enough in school - I really enjoy higher mathematics. I use some of it at work (in system design) but I really should have stayed in school a lot longer, and got a BSEE.
Understanding polar and rectangular coordinates, as well as vectors and imaginary numbers REALLY helped me understand impedance, reactive circuits and calculating voltages between varying-phase signals.
I only went back to study math beyond simple algebra four years ago - in my late 40's. It then occured to me that I didn't stay in school long enough, and have missed out on a lot.
Understanding polar and rectangular coordinates, as well as vectors and imaginary numbers REALLY helped me understand impedance, reactive circuits and calculating voltages between varying-phase signals.
I only went back to study math beyond simple algebra four years ago - in my late 40's. It then occured to me that I didn't stay in school long enough, and have missed out on a lot.
faeriecat
Member
- Oct 14, 2012
- 338
- 1
Right there with you Kiwidan. And some *basic* geometry ... like how to figure out how many sq/ft of carpet you need. And adding/subtracting fractions if you work in construction (or build things for the heck of it). But other than that, I don't see the point in most of these maths LOL.
faeriecat
Member
- Oct 14, 2012
- 338
- 1
Nick
Member
- Feb 27, 2009
- 14,527
- 464
It's been a pleasure of mine since I left high school. Bloody good show!
I LOVE xkcd! :bounce
Indeed. One of my favourites: http://www.christianforums.net/showthread.php?t=42571
But there's so many!
tim-from-pa
Member
- Aug 4, 2005
- 4,716
- 436
There's not a day that goes by that I don't use moderately higher math in some form or another. I'm a very "quantitative" type person always assigning a numerical value, angle or whatever to something.
For example, someone stated that the moon looks full for 3 days to the average person. I wanted to calculate what percentage that would be illuminated to look full. I don't use really high math for that, but I converted days to approximate angular position of the moon. The formula for approximating the portion illuminated of the moon is simple (about high school level using trigonometry):
0.5(1-cos(x)) where x=0 degrees at new moon, x=90 degrees at first quarter, etc.
The moon "revolves" 360 degrees in 29.53 days (actually that's relative to earth and solar position) which is about 12.19 degrees per day. That's a straightforward division problem, elementary math. So if it's say, 10 days past new moon, then x= 121.9 degrees.
The rest you can put in a calculator and find it's .764 illuminated or 76.4%
If anyone's remotely interested, using the 3 days idea above, the moon looks full when it's 97.5% or better. We'll call that about 98% and lasts for several days.
Another example is I actually used trigonometry and coordinate vectors to look over my deeds to my lands. I actually understand that mathematical jargon self-taught. The land area I calculated was what they got, but programming a computer to calculate it speeds things up some!
And it goes on and on.
For example, someone stated that the moon looks full for 3 days to the average person. I wanted to calculate what percentage that would be illuminated to look full. I don't use really high math for that, but I converted days to approximate angular position of the moon. The formula for approximating the portion illuminated of the moon is simple (about high school level using trigonometry):
0.5(1-cos(x)) where x=0 degrees at new moon, x=90 degrees at first quarter, etc.
The moon "revolves" 360 degrees in 29.53 days (actually that's relative to earth and solar position) which is about 12.19 degrees per day. That's a straightforward division problem, elementary math. So if it's say, 10 days past new moon, then x= 121.9 degrees.
The rest you can put in a calculator and find it's .764 illuminated or 76.4%
If anyone's remotely interested, using the 3 days idea above, the moon looks full when it's 97.5% or better. We'll call that about 98% and lasts for several days.
Another example is I actually used trigonometry and coordinate vectors to look over my deeds to my lands. I actually understand that mathematical jargon self-taught. The land area I calculated was what they got, but programming a computer to calculate it speeds things up some!
And it goes on and on.
tim-from-pa
Member
- Aug 4, 2005
- 4,716
- 436
Not professionally, but as amateur type pursuits as well as math and time-keeping interests. I do understand about and even made some (working) sundials --- that's the standing joke here on this forum because I always compare things to sundials. :D
Similar threads
[__ Prayer __]
Yogi
