Crash when Solve for Integral with 15C

[Gerson W. Barbosa]

(09-01-2017 05:47 AM)Dieter Wrote:  somehow I feel that in this case some variable substitution should be applied to calculate the integral easier and faster. Maybe someone has an idea here?

By making u=x^3 the integral can be evaluated twice as fast on the HP-15C emulator:

2 ENTER 3 / STO 0

LBL 0
e^x
LASTx
RCL 0
y^x
/
RTN

0 ENTER 216 Intxy 3 / => 5.963938097E91 (1'15")

Gerson.