Mark the correct alternative in the following: If f(x) = |x – a| ϕ (x), where ϕ (x) is continuous function, then

Question

Philoid · Accepted Answer

Formula:-

(i) A function f(x) is said to be continuous at a point x=a of its domain, iff

(ii) for right hand derivative

) for left hand derivative

Given:-

f(x) = |x – a| ϕ(x)

using formula (ii)

For L.H.L