If #xsinh w + ycosh w =1 and xcosh w - ysinh w=1#, how do you show that #(x^2 + y^2)^2 - 4xy = 0#?
Refer to the Proof furnished in Explanation below.
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
Hence, the Proof.