Table Of Integrals Worksheet - Duke Mathematics Department

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Table Of Integrals Worksheet
Name __________________________
Pocket Book of Integrals and Mathematical Formulas, 3rd Edition, by Ronald J.
Tallarida, Chapman and Hall/CRC Press1999.
Work with a partner. Each student will turn in the worksheet.
How can you tell where the Table of Integrals is, just by looking at the outside of the
book?
Turn to page 176. What table begins there?
What table begins on page 234?
On pages 176 – 179, you will see a list of the most commonly-used integrals. Look
through it to see how many of them are already familiar to you.
When this book writes log x, what does it mean?
Look at formula no. 8. Use a method of integration you know to derive this formula.
Use formula no. 2 to find
1
x
3
dx.
Use an appropriate formula to find
2
t
dt. (Which formula did you use?)
Find these integrals. In each case, tell which formula you used:
 ln x dx.
dt
1 t
2
1
 25  x
1
7u
2
2
dx
du
Use an appropriate formula from the table to find this integral from the TrigSub lab:

25  x 2 dx . Does your answer agree with the one you found in lab?
Now turn to page 180. What important note do you see at the top of that page?
Now look at the way the table is arranged. Flip through the pages to see how the
integrands are arranged, so you will know how to find the integrals you need.
1
. Find an appropriate formula in
(t  2) t 2
the table, list the formula number, and write down an antiderivative. Remember that in
our case the independent variable is t. Now write down two more antiderivatives.
Suppose you want to find an antiderivative for
2
Use that antiderivative and your calculator to evaluate
1
 (t  2) t
1
2
dt.
Suppose we want to find an antiderivative for
1
. Which formula do you use?
x  3x  1
2
Are you sure? How can you tell?
Now find
 2t
And now find
2
dt
. Which formula did you use?
 t 1
x
2
5
dx. Check your answer by differentiating.
 2x  1
Reduction formulas
Sometimes we use a table of integrals to reduce an integral to something simpler.
Consider the problem
 tan
5
x dx.
Which formula can help you reduce this integral? Use it.
Then use another formula to complete your work.
So your final answer is…
 tan
5
x dx 
Finally, use the Table of Definite Integrals to find these surprising results!
1

0
 /2

0
1
ln
1
dx
x
1
d
2
1  cos
3
 x ln( 1  x)dx
0
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