Question

Find f (x) + f (1- x) if f (x) = + √

Answer 1

Given ,

f(x)=  

x+1

x

​

 

​

 

diff. w.r.t x

f  

′

 

(x) =  

2  

x

​

(x+1  

2

)

1−x

​

 

put x=1

f  

′

 

(1) =  

2  

1

​

(1+1  

2

)

1−1

​

 

f  

′

 

(1) =0