Which of the following is not an antiderivative for sin x cos x [ sine of x times cosine of x]

W) \(\frac{\sin^{2}x}{2}\) [one-half sine squared of x]

X) \(-\frac{(\cos^{2}x)}{2}\) [negative one-half cosine squared of x]

Y) \(\frac{(sin\,2x)}{4}\) [one-fourth sine of two x]

Z) \(-\frac{(cos\,2x)}{4}\) [negative one-fourth cosine of two x]
Y) \(\frac{sin\,2x}{4}\)