Multiple Choice Answers? (1 Viewer)

samcalamos

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Isn't 5: A since a rotation by -i is a rotation pi/4 clockwise?
 

tommo727

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Can you explain 7? And I thought 2 was A. Agree with the rest
 

JAMLO

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Isn't 5: A since a rotation by -i is a rotation pi/4 clockwise?
No B is correct because if you rationalise the complex number given you get -i which is a rotation of 90 degrees towards the right, hence clockwise. Hence B is correct
 

InteGrand

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Can you explain 7? And I thought 2 was A. Agree with the rest
For Question 2, option (A) doesn't satisfy p'(1) = 0. Remember, to be a multiple root, we also need p'(1) = 0.

For Question 7, it's based on the following result (should be in at least one of the textbooks, maybe Arnold and Arnold?):

 

tommo727

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Correct me if I'm wrong but I am pretty sure for A P'(1) = 0 and for C P'(1) = 1
 

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