A) \[\frac{{{d}^{2}}y}{d{{x}^{2}}}=0\]
B) \[\frac{dx}{dy}=0\]
C) \[\frac{dy}{dx}=0\]
D) \[\frac{{{d}^{2}}x}{d{{y}^{2}}}=0\]
E) \[\frac{dy}{dx}+x=0\]
Correct Answer: A
Solution :
Let\[y=mx+c\]represents all non horizontal lines in a plane. \[\therefore \] \[\frac{dy}{dx}=m\]and\[\frac{{{d}^{2}}y}{d{{x}^{2}}}=0\]
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