Clicker Questions Friday Sep. 3, 2010

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Clicker Questions Friday Sep. 3, 2010 Class 1, #4: Which if the following can NOT be the solution of a differential equation?

Clicker Questions Friday Sep. 3, 2010 Class 1, #5: Which if the following can NOT be the solution of a differential equation?

Clicker Questions Friday Sep. 3, 2010 Class 1, #6: TRUE or FALSE: “A differential equation is a type of function.” A. TRUE B. FALSE.

Clicker Questions Friday Sep. 3, 2010 Question 1: TRUE or FALSE: “A solution of a differential equation is a function.” A. TRUE B. FALSE.

Clicker Questions Friday Sep. 3, 2010 Question 2: TRUE or FALSE: “A solution of a differential equation is a unique function.” A. TRUE B. FALSE.

Clicker Questions Friday Sep. 3, 2010 Question 3: The amount of chemical in a lake is decreasing at a rate of 30% per year. If p(t) is the total amount of the chemical in the lake as a function of time t in years, which differential equation models this situation? A) p’(t)=-30 B) p’(t)=-0.30 C) p’(t)=p-30 D) p’(t)=-.3p E) p’(t)=0.7p

Clicker Questions Friday Sep. 3, 2010 Question 4: Consider the differential equation xy’+y=0.The solution of this DE is A. y =1/x, x > 0 B. y = 1/x, x≠0 C. y =0, x>0 D. y =0, for all x E. More than one of the above