Exam 2: A: Basic Structures: Sets, Functions, Sequences, Sums, Matrices

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find a formula that generates the following sequence a1, a2, a3 . . . . -2, 0, 2, 0, 2, 0, 2, . . .

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Consider these functions from the set of licensed drivers in the state of New York. Is a function one-to-one if it assigns to a licensed driver his or her (a) birthdate (b) mother's first name (c) drivers license number?

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find a formula that generates the following sequence a1, a2, a3 . . . . -0, 2, 0, 2, 0, 2, 0, . . .

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suppose A = {a, b, c} and B = {b, {c}}. Mark the statement TRUE or FALSE. - {b,c}P(A)\{ b , c \} \in \mathcal { P } ( A )

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Suppose f:NNf : \mathbf { N } \rightarrow \mathbf { N } has the rule f(n)=4n2+1f ( n ) = 4 n ^ { 2 } + 1 . Determine whether ff is onto N\mathbf { N }

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suppose A = {1, 2, 3, 4, 5}. Mark the statement TRUE or FALSE. - (1,1)A×A( 1,1 ) \in A \times A

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Let A=(1m01)\mathbf { A } = \left( \begin{array} { c c } 1 & m \\0 & 1\end{array} \right) . Find An\mathbf { A } ^ { n } where n is a positive integer.

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mark each statement TRUE or FALSE. Assume that the statement applies to all sets. -  If AB=AB, then A=B\text { If } A \cap B = A \cup B \text {, then } A = B

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Find the sum 112 + 113 + 114 + · · · + 673.

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Suppose f:NNf : \mathbf { N } \rightarrow \mathbf { N } has the rule f(n)=3n21f ( n ) = 3 n ^ { 2 } - 1 . Determine whether ff is 1-1 .

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