be a circle inscribed inside a rhombus 
.
and 
be variable points on 
and 
respectively, such as 
is always the tangent line to 
is the same.
,
such that any graph with 
vertices and at least 
passing through point 
is an oblique strophoid.
Y by Adventure10, Mango247
Prove that:
(a) If
is a strictly increasing sequence of positive integers such that 
is a constant as 
runs through all positive integers, then this constant is an integer greater than or equal to 
; and
(b) Given an integer
, there exists a strictly increasing sequene of positive integers such that 
for all indices .
(a) If
is a strictly increasing sequence of positive integers such that 
is a constant as 
runs through all positive integers, then this constant is an integer greater than or equal to 
; and(b) Given an integer
, there exists a strictly increasing sequene of positive integers such that 
for all indices .
