Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
Justify that the function
h
(
x
)
=
e
x
cos
x
1
+
1
−
x
2
h(x)=\dfrac{e^{x}\cos x}{1+\sqrt{1-x^{2}}}
h
(
x
)
=
1
+
1
−
x
2
e
x
cos
x
is continuous on the open interval
(
−
1
,
1
)
(-1,1)
(
−
1
,
1
)
.
Browse the problem library