All Calculus 2 Resources
Example Questions
Example Question #131 : Integral Applications
What is the average value of the function on the interval ?
The average value of the function on the interval is equal to
Substitute . Then , and ; the bounds of integration become 2 and 6, and the above expression becomes
Example Question #311 : Integrals
What is the average value of the function on the interval ?
The average value of the function on the interval is equal to
For now, we look at the indefinite integral . The integral can be changed by setting and . Then
, or
and
so
which is the antiderivative.
Now, we can find the definite integral, and, subsequently, the average value:
Example Question #313 : Integrals
Approximate the length of the curve of on the interval . Use Simpson's Parabolic Rule with to make your estimate to the nearest thousandth.
The length of the curve of on the interval can be determined by evaluating the integral
.
, so
, and the integral to be approximated is
, or simplified,
.
We divide the interval into four subintervals of width each, so
.
By Simpson's rule, we can estimate the integral by evaluating
where .
We evaluate at these points, then substitute:
The approximation is therefore
Example Question #132 : Integral Applications
Approximate the length of the curve of on the interval . Use Simpson's Parabolic Rule with to make your estimate to the nearest thousandth.
The length of the curve of on the interval can be determined by evaluating the integral
.
, so
, and the integral to be approximated is
We divide the interval into four subintervals of width each, so
.
By Simpson's rule, we can estimate the integral by evaluating
where
We evaluate at these points, then substitute:
The approximation is therefore
Example Question #138 : Integral Applications
What is the average value of the function on the interval ?
The average value of the function on the interval is equal to
, or
.
To evaluate this integral, we note that has negative value on and positive value on , so on , can be defined as
or
Therefore, the average value of is equal to
Example Question #312 : Integrals
What is the average value of the function on the interval ?
The average value of the function on the interval is
.
We can integrate the indefinite integral
as follows:
Set , .
Then
or
and
.
Therefore,
Therefore, the average value is:
Example Question #313 : Integrals
What is the average value of the function on the interval ?
The average value of the function on the interval is equal to
.
Substitute . Subsequently, and . The bounds of integration become and , so the integral can be rewritten as
.
Example Question #1 : Average Values And Lengths Of Functions
What is the arc length if , from ?
Write the formula for arc length.
Calculate the derivatives.
Substitute the derivatives and the bounds into the integral.
Example Question #1 : Average Values And Lengths Of Functions
What is the average value of the function
from to ?
The average value of a function p(t) from t=a to t=b is found with the integral
.
In this case, we must compute the value of the integral
.
A substitution makes this integral clearer. Let . Then . We should also rewrite the limits of integration in terms of u. When t = 0, u=1, and when t = 2, u = 5. Making these substitutions results in the integral
Evaluating this integral using the fact that
yields
Example Question #1 : Average Values And Lengths Of Functions
What is the average value of the function over the interval ?
In general, the average value of a function over the interval is
This means that the average value of over is
.
Since the antiderivative of is , the integral evaluates to
.