For the curve

MATHEMATICS · Single correct · AP · Calculus AB · Analytical Applications of Differentiation · Analytical Applications of Differentiation

Problem

For the curve y=x3−3xy = x^{3} - 3x, the tangent is horizontal at certain point(s). Which of the following gives the equation(s) of the normal line(s) at those point(s)? (a) x=1x = 1 (b) x=1 and x=−1x = 1 \text{ and } x = -1 (c) y=2 and y=−2y = 2 \text{ and } y = -2 (d) x=2 and x=−2x = 2 \text{ and } x = -2

Related theory

Browse the problem library