` f(x) = 10 x ` का अवकलज ज्ञात कीजिए ।

Explanation

` :' f'(x) = lim _( h to 0 ) ( f(x+h)-f(x))/h`
` = lim _( h to 0 ) ( 10 ( x+h)-10x)/h`
` = lim _( h to 0 ) (10h)/h = lim _( h to 0 )10=10.`