Friday 4 November 2011

mirror problems

[[[Priyanka Laskar (Puja)]]]] 
Keen to make a good impression at the start of term, you stand in front of the mirror to check you look OK. How long does the mirror need to be so that you can see yourself top to toe? How far from the mirror should you stand? If you wanted most people to be able to use the same mirror, how long should it be and how high up on the wall should you hang it?
 
 

No comments:

Post a Comment

Define \(f: \mathbb{R} \rightarrow \mathbb{R}\) by \[f(x)= \begin{cases}(1-\cos x) \sin \left(\frac{1}{x}\right), & x \neq 0 \\ 0, &a...