Grade 12Differential Calculus
f is diff at 1. find f '(1)
if lim h→0 f(1+h) / h =5.
f is diff at 1. find f '(1)
if lim h→0 f(1+h) / h =5.
1 Answer
Badiuddin askIITians.ismu Expert
Dear dinesh
lim h→0 f(1+h) / h =5
limit exist onlt when f(1+h) =0 at h=0
so f(1)=0
now
lim h→0 {f(1+h) -f(1)}/ {(1+h)-1) =5
which is f'(1) =5
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