All Calculus 2 Resources
Example Questions
Example Question #33 : Calculus Ii
Evaluate the following limit:
The first step is to always plug in the value of the limit. Doing so we get
(Remember )
This qualifies to use l'Hôpital's Rule on the original equation. The rule says to take the derivative of both the numerator and denominator, individually. We get
This still cannot be evaluated therefore we take the derivative of both the numerator and denominator again, individually. We get
Yet again we cannot evaluate this and we need to apply l'Hôpital's Rule again.
Now we can evaluate the equation. Plugging in we get.
Which is our answer.
Example Question #34 : Calculus Ii
Evaluate the following limit:
The first step is to always plug in the value of the limit. Doing so we get
(Remember )
This qualifies to use l'Hôpital's Rule on the original equation. The rule says to take the derivative of both the numerator and denominator, individually. We get
This still cannot be evaluated therefore we take the derivative of both the numerator and denominator again, individually. We get
Now we can evaluate the equation. Plugging in we get.
remember that
Therefore our answer is 0.
Example Question #35 : Calculus Ii
Evaluate the following limit:
The first step is to always plug in the value of the limit. Doing so we get
This qualifies to use l'Hôpital's Rule on the original equation. The rule says to take the derivative of both the numerator and denominator, individually. We get
Now we can evaluate the equation. Plugging in we get.
Therefore our answer is 1.
Example Question #36 : Calculus Ii
Factor the numerator and cancel out like terms
From here, substitute two in for and solve.
Example Question #37 : Calculus Ii
Evaluate
Does not exist
There are two ways to approach this problem. One way is to consider the rates of growth of the numerator and denominator seperately. Both approach infinity, but at different rates. Looking at the graph provided, its clear that the function in the numerator, grows to infinity at a much greater rate than the function in the denominator, . Since the numerator is growing faster than the denominator, the overall fraction gets larger and larger as x approaches infinity. Thus the answer is .
A second way is to use L'hospital's rule a few times.
Either way, the answer is .
Example Question #38 : Calculus Ii
Infinite Limits
Find the limit if it exists.
None of the other answers.
As gets closer and closer to zero, also gets closer and closer to zero, and gets larger and larger.
In fact, will become arbitrarily large (i.e ).
Example Question #31 : Limits
What is the limit of:
Does not exist.
To evaluate this limit, we can simply "plug in" 2 for x.
Doing so, we get
.
Example Question #40 : Calculus Ii
Find the limit.
By plugging in 1 for x, we get
.
Unfortunately, is an answer in indeterminate form, which means that we cannot make sense of the answer.
Instead, we can use algebra techniques to simplify first.
Doing so, we get
.
The (x-1) terms cancel, and we are left with .
Now, by plugging in 1, we get
.
Example Question #41 : Limits
Find the limit.
By plugging in 0, we get
.
This solution is "indeterminate." Instead of directly plugging in 0, we simplify the function first, so we multiply by the conjugate of the numerator:
.
Multiplying the numerators (via the FOIL method) and the denominators, we get
Plugging in 0, we get
Example Question #42 : Limits
Find the value of the limit (if it exists):
Does not exist.
By "plugging in" 2, we get , which is indeterminate.
We need to manipulate the function to see if anything cancels out first.
By factoring, we have
.
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