The slope of the tangent to y = x² at x = 3 is: (NDA PYQ)
A3
B6
C9
D12
Question 2
The slope of the normal to y = x³ at x = 1 is: (NDA PYQ)
A3
B−3
C1/3
D−1/3
Question 3
A function f(x) is increasing on an interval if: (NDA PYQ)
Af'(x) < 0 throughout
Bf'(x) = 0 throughout
Cf'(x) > 0 throughout
Df''(x) > 0 throughout
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