which of the statements a through f about the function ( y = f(x) ) graphed here are true, and which are…

which of the statements a through f about the function ( y = f(x) ) graphed here are true, and which are false?\na. the statement ( lim_{x\rightarrow2}f(x) ) does not exist is false.\nb. the statement ( lim_{x\rightarrow2}f(x)=2 ) is false.\nc. the statement ( lim_{x\rightarrow1}f(x) ) does not exist is true.\nd. the statement ( lim_{x\rightarrow c}f(x) ) exists at every point ( c ) in ( (-1,1) ) is true.\ne. the statement ( lim_{x\rightarrow c}f(x) ) exists at every point ( c ) in ( (1,3) ) is true.\nf. the statement ( f(1)=-3 ) is false.\ng. the statement ( f(1)=0 ) is true.\nh. the statement ( f(2)=3 ) is
Answer
Explanation:
Step1: Analyze the limit as (x\rightarrow2)
For the limit (\lim_{x\rightarrow2}f(x)), we look at the left - hand limit and the right - hand limit. As (x) approaches (2) from the left, (y = 1) (from the semi - circle part of the graph). As (x) approaches (2) from the right, (y = 1). So (\lim_{x\rightarrow2}f(x)=1).
- Statement a: Since (\lim_{x\rightarrow2}f(x) = 1) (exists), the statement “(\lim_{x\rightarrow2}f(x)) does not exist” is false.
- Statement b: Since (\lim_{x\rightarrow2}f(x)=1\neq2), the statement “(\lim_{x\rightarrow2}f(x)=2)” is false.
Step2: Analyze the limit as (x\rightarrow1)
As (x) approaches (1) from the left, (y) approaches (1) (from the left - hand side of the semi - circle). As (x) approaches (1) from the right, (y) approaches (1) (from the right - hand side of the semi - circle). So (\lim_{x\rightarrow1}f(x)=1) (exists). So statement c is false.
Step3: Analyze the limit as (x\rightarrow c) for (c\in(-1,1))
For any (c\in(-1,1)), the function is continuous (assuming the graph is continuous in this interval). For a continuous function (y = f(x)) at (x = c), (\lim_{x\rightarrow c}f(x)=f(c)). So the statement “(\lim_{x\rightarrow c}f(x)) exists at every point (c) in ((-1,1))” is true.
Step4: Analyze the limit as (x\rightarrow c) for (c\in(1,3))
At (x = 2), (\lim_{x\rightarrow2}f(x)=1). For other points (c\in(1,3)) (assuming the graph is continuous in the non - hole regions), the function is continuous. So the statement “(\lim_{x\rightarrow c}f(x)) exists at every point (c) in ((1,3))” is true.
Step5: Analyze (f(1))
Looking at the graph, when (x = 1), (y = 1). So the statement (f(1)=-3) is false and the statement (f(1) = 0) is false.
Step6: Analyze (f(2))
Looking at the graph, when (x = 2), (y = 1). So the statement (f(2)=3) is false.
Answer:
a. False b. False c. False d. True e. True f. False g. False h. False