JEE Online Mock Test For Full Syllabus Set B

Page 1 of 90

Question 1

Question

Let ƒ (x) be differentiable function such that ƒ (x) and ƒ '(x) have opposite signs every where, then -

Answer

ƒ (x) is decreasing function

|ƒ (x)| is decreasing function

ƒ (x) is an increasing function

|ƒ (x)| is increasing function