Which of the following equations does NOT include the half-line \(y\)\(=\)\(x\), where \(x\) and \(y\) are positive, in its solution set?

W) \(x^{y}=y^{x}\)

X) cosine of the product \(xy\) equals sine of the product \(xy\)

Y) \(x\) natural log of \(y=y\) natural log of \(x\)

Z) \(2^{x}+3^{y}=2^{y}+3^{x}\)
X) COSINE OF THE PRODUCT \(xy\) EQUALS SINE OF THE PRODUCT \(xy\)