Wednesday, February 11, 2015

What's Your Function? Blog Post #2 by Youwei Cheng (Ben)

Part a:
1.I found an GDP of China 
2. From the data it shows, I think this relationship
3.
Year, t
2007
2008200920102011201220132014



GDP(G)
2.4
3.2
4.0
2.6
3.8
2.7
3.4
4.5



4. This is the data of GDP of China from 2007-2014. T, represents the year, T=2007 means in 2007. The GDP is the function of year. So, it can be represent in function notation as G=f(t).
5.R.O.C1=0.8         R.O.C2= 0.8      R.O.C3==-1.4
7. This function is not a linear function,because the rate of change is not constant.
8. NO, it is not a mathematical model, because the output is not depend on the input
Part b:
1.The Data of GDP of China and Japan. The data of GDP of China and Japan is not a function.
2.
Year, t
2007
2008
2009
2010
2011
2012
2013
2014




GDP of China 
2.4
3.2
4.0
2.6
3.8
2.7
3.4
4.5




GDP of Japan
1.7
1.8
2.9
3.0
3.2
3.1
2.9
2.9




3.This is the GDP  between two country,  T represents the year, t=2007 means in 2007, and in that year,China's GDP is 2.4 and the GDP of Japan is 1.7.
4. data of GDP of China is not a function of data of GDP of China.  Because exactly one output is not paired with exactly input.
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4 comments:

  1. AnonymousFebruary 11, 2015 at 3:57 PM

    Ben,
    I liked that you ventured outside of the box and used tables instead of graphs! I also liked that you picked weather, as everyone can relate to weather.
    -Tyler

    ReplyDelete
  2. AnonymousFebruary 12, 2015 at 11:08 AM

    Ben,
    I like the way you analysis your data, and I love the way you use table to find the function. Good job

    ReplyDelete
  3. lilnesscapadesMarch 15, 2015 at 2:50 PM

    ben,

    your first example is good and relevant. you explained the relationship well. the only thing you forgot was to represent the relationship using function notation.

    your second example will only work if you eliminate the time variable and specific with remaining variables are the input and the output. you did not specify this. let me know if you don't understand what i am talking about here.

    professor little

    ReplyDelete
  4. lilnesscapadesMarch 15, 2015 at 2:51 PM

    also, this was one day late, so it loses one point.

    professor little

    ReplyDelete

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