Question

1. The derivative of the function f defined as f(x)=2x+1 is (a)2x (b) x (c) 2 (d)x+1​

Answer 1

Answer:

(B) is your answer

Step-by-step explanation:

Let f is defined as  if 

 if 

 if 

Since, f (x) is continuous.

 Limit of f (x) at x = 2 = value of f (x) at 2.

i.e., 

Now, 

But given  at 

Answer 2

Step-by-step explanation:

f(x) = 2x + 1

f'(x) = 2*dx/dx + 0 [ derivative of a constant = 0 ]

=> f'(x) = 2

option C