Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
State the condition on the domains of two real-valued functions
f
f
f
and
g
g
g
so that the sum
(
f
+
g
)
(
x
)
(f+g)(x)
(
f
+
g
)
(
x
)
is defined.
Browse the problem library