Teaching AP DSC School Assistant 2025 Mock Test Series Mathematics Differential Calculus Applications of Derivatives
The normal to a given curve is parallel to x-axis if
1
\(\frac{{dy}}{{dx}} = 0\)
2
\(\frac{{dy}}{{dx}} = 1\)
3
\(\frac{{dx}}{{dy}} = 0\)
4
\(\frac{{dx}}{{dy}} = 1\)