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 Quote by Doc Al That's for sure. Please point this out to your instructor.
Luckily I was able to get an international version for $20, I feel for those who bought it from the bookstore for$176. I have another question...

This is the author's formula and explanation of time dilation...

$t = \frac{t_0}{\sqrt{1-\frac{v^2}{c^2}}}$

t0 = rest clock
t = moving clock
c = speed of light
v = speed of clock in motion

An Amazon review says that he has definitions of t and t_0 backwards, is this true?