Day 6, Thurs, Feb 15, 2018

Quizzes

Quiz 3 lost, temporarily I hope. :-{

Social

year-of-the-dog-2018.jpg

Happy Lunar New Year!

Meet more students

Report 1 due tomorrow Friday, Feb 16

ublearns_report1.png

Report Guide

Deterministic dynamical systems

An insect population model, cont'd

mayfly.jpg mayfly.png

Last time: simplest model model leads to unrealistic indefinite exponential growth.

A better model

Iteration

Exploration: Record your observations here: https://docs.google.com/spreadsheets/d/15Q0KgDrHVwITp6lQG76LJqRy03l_c0rdAYI80y3oA0k/edit#gid=0 except change the K to a J.

Plots to summarize what is seen:

  1. by hand
  2. with Python, looping over b and looping over t
  3. accelerated by vectorization ...

Numpy

the substrate of all scientific computing in Python

arrays

constructors

arithmetic

vectorized version of mayfly diagram