Quiz: calculating a definite integral

[W_Max]

Not exactly, but close to. I wrote simple RPN program.

0 STO4
LBL00 RCL3 INPUT +/- Y^X
STO+4 RCL1 STO+3 RCL2 RCL3 ?> GT00
RCL4 RCL1 * Stop

0.00005 STO1, 1 STO2 0 STO3

It takes about 2+ min to complete (20000 cycles or 166cycles/sec! ). As HP30b is relatively fast machine - such a 'brute force' method gives acceptable result too.