Chapter 2: Q66E (page 155)
Draw the graph of the function f(x) = [x] + [x/2] from R to R.
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Question: a) Prove that a strictly increasing function from R to itself is one-to-one.
b) Give an example of an increasing function from R to itself is not one-to-one.
a) define the union, intersection, difference, and symmetric difference of two sets.
b) What are the union, intersection, difference, and symmetric difference of the set of positive integers and the set of odd integers?
a) Prove that a strictly increasing function from R to itself is one-to-one.
b) Give an example of an increasing function from R to itself is not one-to-one.
Compute each of these double sums
What is the sum of the terms of the geometric progression a+ar+...+arn when .
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