If the tangent to the curve y = f(x) is perpendicular to y – axis then

# If the tangent to the curve y = f(x) is perpendicular to y - axis then

1. A

$\frac{dy}{dx}=0$

2. B

$\frac{dx}{dy}=0$

3. C

$\frac{dy}{dx}=1$

4. D

$\frac{dx}{dy}=-1$

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### Solution:

$\frac{dy}{dx}={f}^{1}\left(x\right)=0$

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