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preface to fifteenth edition

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2.106 SECTION 2<br />

TABLE 2.24<br />

Integrals (Continued)<br />

<br />

Rational functions (continued)<br />

dx 1 b cx<br />

1 2<br />

23. tan C [ac b 0]<br />

a 2bx cx2 2 2<br />

pac b pac b<br />

2<br />

1 pb ac b cx<br />

ln C<br />

2 b2 ac b2<br />

p p ac b cx<br />

[b2<br />

1 b cx<br />

ac 0]<br />

1<br />

tanh C<br />

b2 ac b2<br />

p<br />

p ac<br />

dx 1<br />

2<br />

24. C, when b ac<br />

a 2bx cx2<br />

b cx<br />

(m nx) dx n mc nb dx<br />

25. ln (a 2bx cx<br />

2<br />

<br />

) <br />

2<br />

<br />

a 2bx cx 2c c a 2bx cx2<br />

f(x) dx<br />

26. In , if f(x) is a polynomial of higher than the first degree, divide<br />

a 2bx cx2<br />

by the denomina<strong>to</strong>r before integrating.<br />

dx 1 b cx<br />

27. <br />

(a 2bx cx<br />

2) p<br />

2(ac b<br />

2)(p 1) (a 2bx cx<br />

2)<br />

p1<br />

(2p 3)c dx<br />

<br />

2<br />

<br />

2(ac b )(p 1) (a 2bx cx<br />

2)<br />

p1<br />

(m nx) dx n 1<br />

28. <br />

(a 2bx cx<br />

2) p<br />

2c(p 1) (a 2bx cx<br />

2)<br />

p1<br />

mc nb dx<br />

<br />

c (a 2bx cx<br />

2)<br />

p<br />

<br />

x<br />

m1(a bx)<br />

n1<br />

(m 1)a<br />

m1 n m2 n<br />

29. x (a bx) dx x (a bx) dx<br />

(m n)b (m n)b<br />

x<br />

m(a bx)<br />

n<br />

na<br />

x<br />

m1(a bx)<br />

n1<br />

dx<br />

m n m n<br />

Irrational functions<br />

2<br />

dx 2<br />

30. a bx dx (a bx)<br />

3<br />

p<br />

p C<br />

31. pa bx C<br />

3b<br />

pa bx b<br />

(m nx) dx 2<br />

32. <br />

(3mb 2an nbx) pa bx C<br />

pa bx 3b 2<br />

dx<br />

33. <br />

; substitute y pa bx, and use 21 and 22<br />

(m nx) pa bx<br />

n<br />

f(x, pa bx)<br />

n<br />

34. <br />

dx; substitute pa bx y<br />

F(x,<br />

n<br />

pa bx)<br />

dx x x<br />

1<br />

1<br />

35. sin C cos c<br />

2 2<br />

pa x a a<br />

dx<br />

2 2 1 x<br />

36. ln (x pa x ) C sinh c<br />

2 2<br />

pa x<br />

a<br />

dx<br />

2 2 1 x<br />

37. ln (x px a ) C cosh c<br />

2 2<br />

px a<br />

a

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