We know that if f is differentiable, we can write the derivative function as f (x +h) – f(x) f'(x) = lim h→0 Hypothesize what lim f(x + h) – 2f(x) + f(x - -h) should represent. Try to convince the reader h2 that your hypothesis is correct. For example, you could compute the above limit for several choices of f and show that the answer agrees with your hypothesis.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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We know that if f is differentiable, we can write the derivative function as
f(x+h) – f(x)
f'(x) = lim
h→0
h
Hypothesize what lim
h→0
f(r +h) – 2f(x) + f(x – h)
h2
should represent. Try to convince the reader
that your hypothesis is correct. For example, you could compute the above limit for several choices
of f and show that the answer agrees with your hypothesis.
Transcribed Image Text:We know that if f is differentiable, we can write the derivative function as f(x+h) – f(x) f'(x) = lim h→0 h Hypothesize what lim h→0 f(r +h) – 2f(x) + f(x – h) h2 should represent. Try to convince the reader that your hypothesis is correct. For example, you could compute the above limit for several choices of f and show that the answer agrees with your hypothesis.
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