29.06.2016 Views

Thomas Calculus 13th [Solutions]

  • No tags were found...

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

180 Chapter 3 Derivatives<br />

3.9 INVERSE TRIGONOMETRIC FUNCTIONS<br />

1. (a)<br />

4<br />

(b)<br />

3<br />

(c)<br />

6<br />

2. (a)<br />

4<br />

(b)<br />

3<br />

(c)<br />

6<br />

3. (a)<br />

6<br />

(b)<br />

4<br />

(c)<br />

3<br />

4. (a) 6<br />

(b)<br />

4<br />

(c)<br />

3<br />

5. (a)<br />

3<br />

(b) 3<br />

4<br />

(c)<br />

6<br />

6. (a) 4<br />

(b)<br />

3<br />

(c)<br />

6<br />

7. (a) 3<br />

4<br />

(b)<br />

6<br />

(c) 2<br />

3<br />

8. (a) 3 4<br />

(b)<br />

6<br />

(c) 2<br />

3<br />

9.<br />

1 2<br />

sin cos sin 1<br />

10.<br />

2 4 2<br />

1<br />

sec cos 1 sec 2<br />

2 3<br />

11.<br />

1<br />

tan sin 1 tan 1<br />

12.<br />

2 6 3<br />

cot sin<br />

1 3<br />

cos<br />

1<br />

2 3 3<br />

13.<br />

lim sin<br />

x 1<br />

1<br />

x 14.<br />

2<br />

lim cos<br />

x 1<br />

1<br />

x<br />

15.<br />

lim tan<br />

x<br />

1<br />

x 16.<br />

2<br />

lim tan<br />

x<br />

1<br />

x<br />

2<br />

17.<br />

lim sec<br />

x<br />

1<br />

x 18.<br />

2<br />

lim sec<br />

x<br />

1 1<br />

x lim cos 1<br />

x<br />

x<br />

2<br />

19.<br />

1 1<br />

lim csc x lim sin 1 0<br />

x<br />

x<br />

x<br />

20.<br />

1 1<br />

lim csc x lim sin 1 0<br />

x<br />

x<br />

x<br />

21.<br />

1 2 dy<br />

y cos ( x )<br />

2x 2x<br />

22.<br />

dx<br />

2 2 4<br />

1 ( x ) 1 x<br />

y<br />

cos<br />

1 1 1 dy<br />

sec x<br />

1<br />

x<br />

dx<br />

x x<br />

2<br />

1<br />

23.<br />

1 dy 2 2<br />

y sin 2t 24.<br />

dt<br />

2 2<br />

1 2t<br />

1 2t<br />

y<br />

1 dy<br />

sin (1 t)<br />

1 1<br />

dt<br />

1 (1 t) 2t t<br />

2 2<br />

25.<br />

y<br />

1 dy<br />

sec (2s<br />

1)<br />

2 2 1<br />

ds<br />

2 2 2<br />

2s 1 (2s 1) 1 2s 1 4s 4s 2s 1 s s<br />

26.<br />

y<br />

1 dy<br />

sec 5s<br />

5 1<br />

ds<br />

2 2<br />

5 s (5 s) 1 s 25s<br />

1<br />

27.<br />

y<br />

1 2 dy<br />

csc ( x 1)<br />

2x 2x<br />

dx<br />

x 1 ( x 1) 1 ( x 1) x 2x<br />

2 2 2 2 4 2<br />

Copyright<br />

2014 Pearson Education, Inc.

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!