Step 2 miscellaneous pure, Q5

Submitted by jetay1 on Thu, 03/16/2017 - 22:42

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Discussion 2016-2017

After using the hints, I found the Fibonacci question (Q5) of the Step 2 mixed pure quite doable, but I'm not sure I'd have ever figured out the $F_i>2F_{i-2}$ trick on my own.

The solutions for that question have a mistake on the last line. It should be $S<3\frac{29}{60}<3\frac{1}{2}$ .

Question 6

Permalink Submitted by jetay1 on Sat, 03/18/2017 - 08:05

Your solution for question 6 has a stray minus sign. It should be $(x_1,y_1)=(0,1)$ and $(1,-1)$ .

Question 8

Permalink Submitted by jetay1 on Sun, 03/19/2017 - 08:26

The hints sheet says the expression for $\pi R$ is a cubic in $q$ . It should be 'quadratic'.

Thank you!

Permalink Submitted by cg213 on Sun, 03/19/2017 - 13:37

Thanks again - I'll make the changes Monday. Quite a few mistakes seemed to creep into this question!

Mistakes corrected

Permalink Submitted by cg213 on Mon, 03/20/2017 - 10:18

And hopefully no new ones added!

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Question 6

Question 8

Thank you!

Mistakes corrected

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