Question

Let ƒ R ⇒ R be a function defined by

where [t] is the greatest integer less than or equal to t. Let m be the number of points where ƒ is not differentiable and

Then the ordered pair (m , I) is equal to :

• A. $(3,\frac{27}{4})$
• B. $(3,\frac{23}{4})$
• C. $(4,\frac{27}{4})$
• D. $(4,\frac{23}{4})$

Answer 1

Answer: (D)

$(4,\frac{23}{4})$

Answer 2

The correct option is(C): $(4,\frac{27}{4})$