Question

The normal to a given curve is parallel to x-axis if

• A. $\frac{dy}{dx}=0$
• B. $\frac{dy}{dx}=1$
• C. $\frac{dx}{dy}=0$
• D. $\frac{dx}{dy}=1$

Answer 1

Answer: (C)

We know that, the normal to a given curve is parallel to x-axis if $\frac{dx}{dy}=0$