Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
Show that in any
Δ
A
B
C
\Delta ABC
Δ
A
B
C
,
3
s
2
<
m
a
+
m
b
+
m
c
<
2
s
\frac{3s}{2} < m_a + m_b + m_c < 2s
2
3
s
<
m
a
+
m
b
+
m
c
<
2
s
.
Browse the problem library