If normal to the curve \[y=f(x)\] is parallel to x-axis, then correct statement is [RPET 2000]

If normal to the curve \[y=f(x)\] is parallel to x-axis, then correct

1.	If normal to the curve \[y=f(x)\] is parallel to x-axis, then correct statement is [RPET 2000]
A.	\[\frac{dy}{dx}=0\]
B.	\[\frac{dy}{dx}=1\]
C.	\[\frac{dx}{dy}=0\]
D.	None of these
Answer» D. None of these

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If normal to the curve \[y=f(x)\] is parallel to x-axis, then correct statement is [RPET 2000]

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