Integration of cosine on wp 34s broken?

[burkhard]

(05-02-2018 12:43 AM)gomefun2 Wrote:  or did I do something wrong?

I entered your program into my hardware (HP-30b) WP 34S and I got the answer you expected (≈ -0.5440) without any of the error codes or screen turning off. So, I don't think you did anything wrong.

Pauli is probably right about the batteries...