Which of the following is false? a. If f(x) is a real function defined in a neighborhood of 0 and if limx→0 f(x) exists, then f is continuous at 0. b. If (an) and (bn) are two increasing sequences, each of positive terms, then so is the sequence (a,bn). C. The function f(x) = e* cos(x)(x* + 7)- is continuous on the whole set R. d. Let an E (-∞, 10) for all n E N. If (an) is an increasing sequence, then it converges. e. Every Cauchy sequence is bounded.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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Which of the following is false?
a. If f(x) is a real function defined in a
neighborhood of 0 and if limx→0 f(x) exists,
then f is continuous at 0.
b. If (a,) and (bn) are two increasing sequences,
each of positive terms, then so is the sequence
(anbn).
c. The function f(x) = e* cos(x)(x* + 7)-! is
continuous on the whole set R.
d. Let a, E (-∞, 10) for all n E N. If (an) is an
increasing sequence, then it converges.
e. Every Cauchy sequence is bounded.
Transcribed Image Text:Which of the following is false? a. If f(x) is a real function defined in a neighborhood of 0 and if limx→0 f(x) exists, then f is continuous at 0. b. If (a,) and (bn) are two increasing sequences, each of positive terms, then so is the sequence (anbn). c. The function f(x) = e* cos(x)(x* + 7)-! is continuous on the whole set R. d. Let a, E (-∞, 10) for all n E N. If (an) is an increasing sequence, then it converges. e. Every Cauchy sequence is bounded.
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