Question

If f( x ) = ( x + 1 ) / x then derivative of f( x) is *
1 point​

Answer 1

f(x)= x+1/x

= x/x + 1/x

= 1+1/x

= 1+(x)^-1

Now,

f'(x),=[1+(x) ^-1]

= 0+(-1)*^-1-1

= 0-x^-2

= -x^-2

= -1/x^2