` x =0 ` और ` x=3` पर फलन `f(x) =3` का अवकलज ज्ञात कीजिए ।

Explanation

`x=0 " पर "f(x)" का अवकलन "`
` f'(0)= lim _( h to 0) (f(0+h)-f(0))/h= lim _( h to 0) (3-3)/h`
` = lim _( h to 0 )
0/h = 0 `
तथा `x=3` पर f(x) का अवकलज ,
` f'(3) = lim _( h to 0 ) ( f ( 3 +h)-f(3))/h= lim _( h to 0 )(3-3)/h`
` = lim _( h to 0 ) 0/h= 0 `