Integral question

[Tim Wessman]

The last question as to why it doesn't spit out immediately a numerical result is due to the way the cas works. If something can't be evaluated symbolically (as bernard just pointed out in this case) it will return it unevaluated. Doing an approx(<returned_integral>) (the shift ENTER function) will return it as an approximate numerical result. Also, if you have 1. or similar as your limit at the bounds, it will automatically do it as an approximation immediately in 1 step since it has a "non-exact" number in the equation.