true or false questions . but please explain why. important 1- for all functions y=f(x) defined on [0,1], the set (f[0,1]) is a bounded set 2- all functions that are continuous on (0,1] are bounded 3- if y=f(x) is an increasing  function on the interval (a,b), and the set {f(x):a{0,1} and I is an interval on which f has both values, then f has a discontinuity in I . 5- if the limit of a function at x=c is 5 , then f(c)=5 6- the function y=f(x) is defined as follows: f(x)=3+ [sin(x-2)/(x-2)] if x≠2 and f(2)=4. then y=f(x) is continuous at all real numbers x.

Advanced Engineering Mathematics
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Author:Erwin Kreyszig
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true or false questions . but please explain why. important

1- for all functions y=f(x) defined on [0,1], the set (f[0,1]) is a bounded set

2- all functions that are continuous on (0,1] are bounded

3- if y=f(x) is an increasing  function on the interval (a,b), and the set {f(x):a<x<b} is also an interval, then y=f(x) is continuous on (a,b)

4- if f:R->{0,1} and I is an interval on which f has both values, then f has a discontinuity in I .

5- if the limit of a function at x=c is 5 , then f(c)=5

6- the function y=f(x) is defined as follows: f(x)=3+ [sin(x-2)/(x-2)] if x2 and f(2)=4. then y=f(x) is continuous at all real numbers x.

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