​
level
k
1.25
function
f(x,y,z)
2
x
2
a
+
2
y
2
b
+
2
z
2
c
n
2
x
2
a
+
2
y
2
b
+
(1-n)
2
z
2
c
2
x
2
a
+
2
y
2
b
+c
n
(-1)
z
n
(-1)
2
x
2
a
+
2
y
2
b
+
n+1
(-1)
2
z
2
c
n
(-1)
2
x
2
a
-
2
y
2
b
+
n+1
(-1)
2
z
2
c
constants
a
2
b
2
c
2
n