If \[y={{(\cos {{x}^{2}})}^{2}}\]then \[\frac{dy}{dx}\]is equal to [Pb. CET 2004]

If \[y={{(\cos {{x}^{2}})}^{2}}\]then \[\frac{dy}{dx}\]is equal to �

1.	If \[y={{(\cos {{x}^{2}})}^{2}}\]then \[\frac{dy}{dx}\]is equal to [Pb. CET 2004]
A.	\[-4x\sin 2{{x}^{2}}\]
B.	\[-x\sin {{x}^{2}}\]
C.	\[-2x\sin 2{{x}^{2}}\]
D.	\[-x\cos 2{{x}^{2}}\]
Answer» D. \[-x\cos 2{{x}^{2}}\]