HP-41 RPN program solution sought - test problem

[C.Ret]

(10-31-2021 05:43 PM)Gerson W. Barbosa Wrote:  Perhaps you can save one byte by eliminating the parentheses:

Good suggestion :
STO0 √x + 1 = tan × RCL0 sin ÷ .4 = 1/x + ∏ 1/x = R/S RST (one Werner's step spare here)

STO0 √x + 1 = tan 1/x EXC0 sin STO÷0 .4 STO×0 ∏ 1/x STO+0 RCL0 R/S RST (two more steps spare , but, is this still AOS logic ?)