Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
Explain why
∣
x
sin
(
1
/
x
)
∣
≤
∣
x
∣
|x\sin(1/x)|\le |x|
∣
x
sin
(
1/
x
)
∣
≤
∣
x
∣
for every real number
x
≠
0
x\neq 0
x
=
0
.
Browse the problem library