5. Let f: R→ R is a differentiable function at to and f(xo) = 0. Show that if g(x) differentiable at ro, then f'(xo) = 0. f(x) is

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5. Let f: R→ R is a differentiable function at xo and f(xo) = 0. Show that if g(x)
differentiable at ro, then f'(xo) = 0.
Hint. g(x) is differentiable at xo if and only if limh→0+
= limh→0- 9(20+h)-9(xo).
g(xo+h)-g(ro)
h
f(x) is
Transcribed Image Text:5. Let f: R→ R is a differentiable function at xo and f(xo) = 0. Show that if g(x) differentiable at ro, then f'(xo) = 0. Hint. g(x) is differentiable at xo if and only if limh→0+ = limh→0- 9(20+h)-9(xo). g(xo+h)-g(ro) h f(x) is
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