T_(2)(x)
must be of the form
A+B(x-(\pi )/(2))+C(x-(\pi )/(2))^(2)
where
A
equals
B
equals: and
C
T_(3)(x)
D+E(x-(\pi )/(2))+F(x-(\pi )/(2))^(2)+G(x-(\pi )/(2))^(3)
D
equals:
E
F
G