A few days ago, my teacher and I had a disagreement about end model behaviors. There was a question on the test asking for the two end model behaviors of the following function:(adsbygoogle = window.adsbygoogle || []).push({});

http://img219.imageshack.us/my.php?image=graph1be.gif

My answers were 2^x for the REMB and -x*sin(x) for the LEMB.

He claims that the only choices for the LEMB are -x and sin(x). His logic is not mathematically sound, because the sin(x) and -x have an equal effect on the graph. He simply claims it "looks more like sin(x)" becuase f(x)=-x does not have a wave-like look to it. At the same time, he admits that sin(x) does not have a growing amplitude. He says that it can't be -x*sin(x) because they are separated by multiplication.

I also disagree with him because on another EMB problem, the correct answer was 3x. According to his logic on the aforementioned problem, the choices should be "3" or "x", yet on this one he agrees with 3x.

What do you guys think?

**Physics Forums - The Fusion of Science and Community**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# End model behaviors

Loading...

Similar Threads - model behaviors | Date |
---|---|

I A question regarding Logistic population model | Feb 1, 2018 |

B How were differential equations for SIR Models calculated? | Dec 11, 2016 |

Asymptotic behavior of this function? | Aug 7, 2014 |

Model for spread of contagious disease. | Dec 3, 2013 |

Very hard modelling and problem solving Calculus Question! | Mar 7, 2013 |

**Physics Forums - The Fusion of Science and Community**