Suppose that P(n), Q(n) and R(n) are statements about the integer n. Let S(n) be the statement: "If P(n) is true then Q(n) and R(n) are both true." (a) The contrapositive of S(n) is the statement Olf Q (n) and R(n) are both true then P(n) is false. Olf Q (n) and R(n) are both true then P(n) is true. Olf at least one of Q (n) and R(n) is false then P(n) is false. Olf Q (n) and R(n) are both false then P(n) is false. Olf at least one of Q(n) and R(n) is false then P(n) is true. Olf P(n) is false then at least one of Q(n) and R(n) is false.

Advanced Engineering Mathematics
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Chapter2: Second-order Linear Odes
Section: Chapter Questions
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(c) You want to prove that S(n) is true for all n E N via the contrapositive. Your proof should start by assuming that n E N and:
OP(n) is true.
OP(n) is false.
OQ (n) and R(n) are both false.
OAt least one of Q(n) and R(n) is false.
OQ (n) and R(n) are both true.
OAt least one of Q(n) and R(n) is true.
ONone of the other answers.
Your proof should finish by deducing that:
OP(n) is true.
OP(n) is false.
OQ (n) and R(n) are both false.
OAt least one of Q(n) and R(n) is false.
OQ (n) and R(n) are both true.
OAt least one of Q (n) and R(n) is true.
OQ (n) is false.
OA contradiction (or false statement).
ONone of the other answers.
Transcribed Image Text:(c) You want to prove that S(n) is true for all n E N via the contrapositive. Your proof should start by assuming that n E N and: OP(n) is true. OP(n) is false. OQ (n) and R(n) are both false. OAt least one of Q(n) and R(n) is false. OQ (n) and R(n) are both true. OAt least one of Q(n) and R(n) is true. ONone of the other answers. Your proof should finish by deducing that: OP(n) is true. OP(n) is false. OQ (n) and R(n) are both false. OAt least one of Q(n) and R(n) is false. OQ (n) and R(n) are both true. OAt least one of Q (n) and R(n) is true. OQ (n) is false. OA contradiction (or false statement). ONone of the other answers.
Suppose that P(n), Q(n) and R(n) are statements about the integer n.
Let S(n) be the statement: “If P(n) is true then Q(n) and R(n) are both true."
(a) The contrapositive of S(n) is the statement
Olf Q (n) and R(n) are both true then P(n) is false.
Olf Q (n) and R(n) are both true then P(n) is true.
Olf at least one of Q(n) and R(n) is false then P(n) is false.
Olf Q (n) and R(n) are both false then P(n) is false.
Olf at least one of Q(n) and R(n) is false then P(n) is true.
Olf P(n) is false then at least one of Q(n) and R(n) is false.
Olf Q (n) and R(n) are both false then P(n) is true.
ONone of the other answers.
(b) The statement: "If Q (n) and R(n) are both true then P(n) is true." is
OThe converse of S(n).
OThe contrapositive of S(n).
OThe converse of the contrapositive of S(n).
ONone of the other answers.
Transcribed Image Text:Suppose that P(n), Q(n) and R(n) are statements about the integer n. Let S(n) be the statement: “If P(n) is true then Q(n) and R(n) are both true." (a) The contrapositive of S(n) is the statement Olf Q (n) and R(n) are both true then P(n) is false. Olf Q (n) and R(n) are both true then P(n) is true. Olf at least one of Q(n) and R(n) is false then P(n) is false. Olf Q (n) and R(n) are both false then P(n) is false. Olf at least one of Q(n) and R(n) is false then P(n) is true. Olf P(n) is false then at least one of Q(n) and R(n) is false. Olf Q (n) and R(n) are both false then P(n) is true. ONone of the other answers. (b) The statement: "If Q (n) and R(n) are both true then P(n) is true." is OThe converse of S(n). OThe contrapositive of S(n). OThe converse of the contrapositive of S(n). ONone of the other answers.
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