I was hinting at the fact that integrate(A(x)/B(x),x), where A(x), B(x) are polynomials in x, is quite easy when B(x) factors into linear factors; use partial fraction expansion. A lot of trig functions crop up when you are unable or unwilling to move into the complex domain and B(x) has quadratic factors. At 02:27 PM 12/16/2016, Fred Lunnon wrote:
Numerically speaking, integration is in contrast easier than differentiation ... WFL
On 12/16/16, Henry Baker <hbaker1@pipeline.com> wrote:
2. Some closed form integrals may require polynomial root-finding (or root expressing), so you may not like the look of the resulting expression. E.g., you might find floating point approximations to certain numbers instead of a "perfectly precise" answer.