Extra Math analysis
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Solve the following problems for extra credit on the midterm and/or the final.
1. Prove the sequence{ n2n
}converges to 0.
2. Prove that {(1)n} does not converge.
For the following, determine the convergence or nonconvergence and prove your conclusion.
3. pn =2n+ 1
n
4. pn =1n
5. pn = sinpin
For 6, 7, and 8 give the negation of each of the following statements.
6. There exists an x such that x < 4.
7. There is a real number x such that if y is any real number, then x+ y = 2.
8. If X is a connected topological space and f : X Y is a continuous function from X to a topologicalspace Y , then the image of f , denoted f(X) is also connected.
9. A group G is cyclic provided that there is a member of a of G such that for each member g of G, there isan integer n such that an = g. Explain in a useful way what it means to say that a group G is not cyclic.