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Prove that the following functions do not have maxima or minima: (i) f(x) = e^ x (ii) g(x) = log x
Applications of Derivatives | CBSE | Class 12 | Exercise 6.5 | Maths | NCERT
Prove that the following functions do not have maxima or minima: (i) f(x) = e^ x (ii) g(x) = log x

(i) Given: 

  

Now 

 

But this gives no real value of  Therefore, there is no turning point.

   does not have maxima or minima.

(ii) Given:  

 

Now 

 

 1 = 0

But this is not possible. Therefore, there is no turning point.

   does not have maxima or minima.

i

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