Question
Question: Tangents to curve y = x<sup>3</sup> at x = – 1 and x = 1 are...
Tangents to curve y = x3 at x = – 1 and x = 1 are
A
Parallel
B
Intersecting obliquely
C
Perpendicular to each other
D
None of these
Answer
Parallel
Explanation
Solution
y = x3 Ž dy/dx = 3x2
at x = 1 m1 = 3 Ž at x = – 1 m2 = 3 parallel