thanks...
I calculated in Origin 8.5 (five minutes) trapezoids area... 50 000 intervals... It work as well and "rough" solution, good for giving a fast solution.
halo, I´m stuck in an definite integral...
P(v)=4π (M2πRT)3/2⋅v2⋅e−Mv2nRT (maxwell speed distribution)
How can I calculate the fraction of Ar in mars?
pd. I got already the scape velocity
But... How can I intregrate and evaluate between (0, 5XE3 m/s) or (5XE3 m/s, infinite) ...