Question

Find the derivative of sin x wrt x from first principles.

Solution

Correct option is

cos x

Let (x) = sin x  

Using the definition of derivative.  

            

                     

                     

                                                   

Hence, f’(x) = cos x

SIMILAR QUESTIONS

Q1

Let f is a differentiable function such that 

          .

Q2

Let f : R+ → R satisfies the functional equation  

          .  

If f’(1) = e, determine f (x).

Q3

Let f is a differentiable function such that   

     .

Q4

Let f be a function such that  .   

.

Q5

Find and b so that the function:    

 

   

Q6

 is continuous at x = 0, find the values of Aand B. Also find f (0).

Q7

Find the natural number a for which  where the function f satisfies the relation f (x + y) = f (xf (y) for all natural number xy and further f (1) = 2.

 

Q8

Find the derivative of y = log x wrt x from first principles.

Q9

Evaluate the derivative of f (x) = xn wrt x from definition of derivative. Hence find the derivative of wrt x.

Q10

Differentiate ax wrt x from first principles.