Question
(3) A. Is this set countable? {x : x Q+}{3x : x Q+} B. Use a one-to-one matching between this set and the set of
(3)
A. Is this set countable?
{x : x Q+}{3x : x Q+}
B. Use a one-to-one matching between this set and the set of natural numbers.
8. Take the sum over the first n odd natural numbers, for n = 3, 4, 5, 6, 7. What is a formula for the sum of the first odd natural numbers? Use induction to prove your formula.
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Elementary Differential Geometry
Authors: Andrew N Pressley
2nd Edition
1848828918, 9781848828919
