It's 2*pi since the integral of abs(cos(x+y)) from x=0 to pi is 2 (independent of y). But here's how you can get Sage to compute a numerical integral for you:
sage: f = lambda y: numerical_integral( lambda x: abs(cos(x+y)), 0, pi )[0] sage: f(0.0001) 1.9999999900000001 sage: numerical_integral( f, 0, pi) (6.2831854397961235, 1.849638380505561e-07) sage: N(2*pi) 6.28318530717959 Do: numerical_integral? for more info on the numerical_integral function. BFJ On Feb 7, 1:02 am, Santanu Sarkar <[email protected]> wrote: > How one can find integral abs(cos(x+y)) where x varies from 0 to pi > and y varies from 0 to pi in Sage? -- To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
