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Lebl-Basic-Analysis-I
· Problem 6.3.1
Sequences of Functions
Mathematics · composition-continuity-two-variables
Problem
Let
I
,
J
⊂
R
I, J \subset \mathbb{R}
I
,
J
⊂
R
be intervals. Let
F
:
I
×
J
→
R
F : I \times J \to \mathbb{R}
F
:
I
×
J
→
R
be a continuous function of two variables and suppose
f
:
I
→
J
f : I \to J
f
:
I
→
J
be a continuous function. Show that
F
(
x
,
f
(
x
)
)
F\bigl(x, f(x)\bigr)
F
(
x
,
f
(
x
)
)
is a continuous function on
I
I
I
.
Related theory
Continuity And Uniform Continuity Formal Treatment
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