Steady Heat Transfer through a Two-Dimensional Rectangular Straight Fin

Table 1

Extra point symmetries admitted by (3.2).

𝑆(𝜔)	Symmetries
(𝛼1+𝛼2𝜔)^𝑚;𝛼1,𝛼2∈ℜ,𝑚≠0,1	𝑋4=−(2(𝛼1+𝛼2𝜔)/𝛼2(𝑚−1))(𝜕/𝜕𝜔)+𝑦(𝜕/𝜕𝑦)+𝑥(𝜕/𝜕𝑥)
𝜔^𝑚,𝑚≠0,1	𝑋4=−(2𝜔/(𝑚−1))(𝜕/𝜕𝜔)+𝑦(𝜕/𝜕𝑦)+𝑥(𝜕/𝜕𝑥)
𝜔	𝑋4=𝜔(𝜕/𝜕𝜔),𝑋5=𝑃(𝑥,𝑦)(𝜕/𝜕𝜔)
	where 𝐸^2𝑃𝑦𝑦+𝑃𝑥𝑥=𝐸^2𝑃