All Calculus 2 Resources
Example Questions
Example Question #36 : Finding Limits And One Sided Limits
Given the graph of , what is ?
Examining the graph above, we need to look at three things:
1) What is the limit of the function as approaches zero from the left?
2) What is the limit of the function as approaches zero from the right?
3) What is the function value as and is it the same as the result from statement one and two?
We can observe that , as approaches from the left and from the right.
Example Question #37 : Finding Limits And One Sided Limits
Evaluate the following limit:
The limit does not exist.
Since an absolute value function is involved, first rewrite the expression as a piecewise function.
is a left-sided limit, so in we are interested in what happens as the function approached 0 from values x<0.
The function f(x) is for , so the limit has value .
Example Question #81 : Limits
Given the graph of the function above, what is ?
Examining the graph, we want to find where the graph tends to as it approaches zero from the left hand side. We can see that there appears to be a vertical asymptote at zero. As the x values approach zero from the left the function values of the graph tend towards negative infinity.
Therefore, we can observe that as approaches from the left.
Example Question #41 : Finding Limits And One Sided Limits
Given the graph of the function above, what is ?
Examining the graph, we want to find where the graph tends to as it approaches zero from the left hand side. We can see that there appears to be a vertical asymptote at zero. As the x values approach zero from the left the function values of the graph tend towards positive infinity.
Therefore, we can observe that as approaches from the left.
Example Question #81 : Limits
Given the graph of the function above, what is ?
Examining the graph, we want to find where the graph tends to as it approaches zero from the right hand side. We can see that there appears to be a vertical asymptote at zero. As the x values approach zero from the right the function values of the graph tend towards positive infinity.
Therefore, we can observe that as approaches from the right.
Example Question #81 : Limits
Evaluate the following limit:
The limit does not exist
To evaluate the limit, simply substitute what we are approaching (5) into the function:
That we are approaching 5 from the left has no impact on the final answer.
Example Question #83 : Limits
Given the graph of above, what is ?
Examining the graph above, we need to look at three things:
1) What is the limit of the function as approaches zero from the left?
2) What is the limit of the function as approaches zero from the right?
3) What is the function value as and is it the same as the result from statement one and two?
Therefore, we can observe that as approaches from the left and from the right.
Example Question #82 : Limits
Given the above graph of , what is ?
Examining the graph, we want to find where the graph tends to as it approaches zero from the right hand side. We can see that there appears to be a vertical asymptote at zero. As the x values approach zero from the right the function values of the graph tend towards positive infinity.
Therefore, we can observe that as approaches from the right.
Example Question #84 : Limits
Given the above graph of , what is ?
Examining the graph, we want to find where the graph tends to as it approaches zero from the left hand side. We can see that there appears to be a vertical asymptote at zero. As the x values approach zero from the left the function values of the graph tend towards negative infinity.
Thus, we can observe that as approaches from the left.
Example Question #89 : Limits
Evaluate the following limit:
, where
The limit does not exist.
Because this is a one sided limit, we can't simply subsitute the value into the function being evaluated. The function is piecewise, changing from one function to a different one at . We are evaluating the limit from the right side, meaning greater than 2. We actually reach a value at 2, which is (approaching 2 from the left - in other words, at values barely greater than 2).
Thus,