Question

If x = a - b then delХ/X is equal to

​

Answer 1

Answer:

x=

a+b

2ab

=>

a

x

=

a+b

2b

Applying Componendo and Dividendo,we get,

=>

x−a

x+a

=

2b−a−b

2b+a+b

=>

x−a

x+a

=

b−a

3b+a

(i)

Again,

x=

a+b

2ab

=>>

b

x

=

a+b

2a

Applying Componendo and Dividendo,we get

=>

x−b

x+b

=

2a−b−a

2a+a+b

=>

x−b

x+b

=

a−b

3a+b

(ii)

Now,from (i) and (ii) we get,

=>

x−b

x+b

+

x−b

x+b

=

b−a

3b+a

+

a−b

3a+b

=

a−b

3a+b

+

a−b

3b+a

=

a−b

3a+b−3b−a

=

a−b

2(a−b)

=2