Homework # 5 - Math 1150
The problems on this homework must be done alone. The honor code is in effect.
You may submit the solutions twice, if you wish.
First Name: Last Name:
1. Compute the indefinite integral \( \int \frac{1}{x+9}\) dx
a. (1/3) arctan(x/3) + c
b. x - 9 ln(x+9) + c
c. ln(x+9) + c
d. ln(x2 +9) + c
e. (1/2)ln(x2 +9) + c
2. Compute the indefinite integral \( \int \frac{1}{x^2 +9}\) dx.
3. Compute the indefinite integral \( \int \frac{x}{x^2 + 9} \) dx.
4. Compute the indefinite integral \( \int \frac{x}{x+9} \)dx.
5. Find the area enclosed between the curves \( y = 2^x\) and \( y = \frac{3}{2}x + 1\).
a. \(\frac{2}{3} \)
b. \( 5- \frac{3}{\ln 2}\)
c. \( 1\)
d. \( 2\)
e. \( 4 - 5 \ln 2\)
6. Find the volume enclosed when you revolve the curve \( y = e^{\frac{x}{2}} \) around the \(x\)-axis between \(x = 0\) and \(x = 4\).
a. \(\pi e^8 \)
b. \(\pi (e^2 - 1)\)
c. \(\pi (e^4 - 1)\)
d. \(\pi e^4\)
e. \( \pi\)