Math, asked by aarif3006, 7 months ago

2x - 1/ (x-1) (2x+3) in partial fractions ​

Answers

Answered by Anonymous
5

Step-by-step explanation:

The answer is

=

1

(

x

1

)

3

3

(

x

1

)

2

3

x

1

+

3

x

2

Explanation:

Let's perform the decomposition into partial fractions

2

x

1

(

x

1

)

3

(

x

2

)

=

A

(

x

1

)

3

+

B

(

x

1

)

2

+

C

x

1

+

D

x

2

=

A

(

x

2

)

+

B

(

x

1

)

(

x

2

)

+

C

(

x

1

)

2

(

x

2

)

+

D

(

x

1

)

3

(

x

1

)

3

(

x

2

)

The denominators are the same, we compare the numerators

2

x

1

=

A

(

x

2

)

+

B

(

x

1

)

(

x

2

)

+

C

(

x

1

)

2

(

x

2

)

)

+

D

(

x

1

)

3

Let

x

=

1

,

,

1

=

A

,

,

A

=

1

Let

x

=

2

,

,

3

=

D

Coefficients of

x

3

0

=

C

+

D

,

,

C

=

D

=

3

Let

x

=

0

,

1

=

2

A

+

2

B

2

C

D

2

B

=

2

A

+

2

C

+

D

1

=

2

6

+

3

1

=

6

B

=

3

Therefore,

2

x

1

(

x

1

)

3

(

x

2

)

=

1

(

x

1

)

3

3

(

x

1

)

2

3

x

1

+

3

x

2

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