defence exam Coast Guard Navik GD (General Duty) 02/2025 Mock Test Series Mathematics Circles Tangents and Normals
If the normal to the curve y = f(x) at the point (3, 4) makes an angle \(\frac{3 \pi}{4}\) with the positive x-axis then f'(3) is equal to
1
-1
2
\(- \frac{3}{4}\)
3
\( \frac{4}{3}\)
4
1