Homework 12 - due Wednesday December 2nd (i.e. the wednesday after Thanksgiving week)

A) Section 7.5 [Total 20 marks]

Questions 24,  25,  26,  27

a) Sketch the phase portrait [3 marks each, total 12 marks]
b) classify the type (node or saddle) and stability (stable or unstable) of the critical point (0, 0) [2 marks each, total 8 marks]

(You don't need to do (b) or (c) for these questions as appears in the textbook)

HINT: I didn't use the expression 'phase portrait' in class. Phase portrait means the type of diagram you drew for homework last week (like figure 7.5.4a).



B) Section 7.6 [18 marks]

Question 3. part a) only 'Express the general solution of the system of equations'


+2 marks for presentation