# If #xsinh w + ycosh w =1 and xcosh w - ysinh w=1#, how do you show that #(x^2 + y^2)^2 - 4xy = 0#?

##### 1 Answer

Aug 16, 2016

Refer to the Proof furnished in Explanation below.

#### Explanation:

We solve the given eqns. for

will use the Identity

For the sake of brevity, we write

given eqns. and, solve them for

The eqns. are

By

Hence, the Proof.

Enjoy Maths.!