Numerical integration direct from the keyboard?

[carey]

(06-25-2023 10:43 PM)lrdheat Wrote:  If you integrate in CAS, upon getting the symbolic answer, you can then press the approximation option in blue shift on the enter key.

If a symbolic answer is obtained in CAS (see result 1 obtained from int(x,x)), pressing the approximation option appears to affect only the display of the numerical coefficient in the symbolic answer (see result 2). This makes sense since, if a symbolic answer is obtained, CAS doesn't have limits of integration to obtain a numerical result.

Of course, it's easy enough just to insert limits of integration in the int command e.g., int(x,x,0,1) to obtain the definite integral, even in CAS mode (see result 3).