The matrix
has eigenvalues 
such that
for all values of 
, so we need to have 
in order for to be real-valued. This happens for
where 
is any integer, and over the given interval we have 
and 
.
A Three Sided Regular Polygon Is Called A Triangle
No. All segments have one perpendicular bisector.
Answer:
You might want to see if I read your ordered pairs right because it was really hard to see for me:
f(2,6)=14
f(-1,3)=5
f(6,4)=14
Step-by-step explanation:
I assume they meant to write f(x,y)=x+2y.
Doing f(2,6) now. This means replace x with 2 and y with 6:
f(2,6)=2+2(6)=2+12=14
f(2,6)=14
Doing f(-1,3) now. This means replace x with -1 and y with 3:
f(-1,3)=-1+2(3)=-1+6=5
f(-1,3)=5
Doing f(6,4) now. This means replace x with 6 and y with 4:
f(6,4)=6+2(4)=6+8=14
f(6,4)=14
