integral() failing with "segmentation fault"
Hi sage community
My question again arises from exercises in technical chemistry done in sage. I wanted to calculate an definite integral (number of transfer units).
var('x') ys=0.06+2*(x-0.0275) xs=ys/1.516 #my function i=1/(xs/(1+xs)-x/(1+x)) #print i #show(plot(i,x,0,0.03)) #I, the indefinite integral of i I=integral(i,x) #print I #show(plot(I,x,0,0.03)) #three methods too calculate the integral print n(I(x=0.0275)-I(x=0)) print numerical_integral(i,0,0.0275) print integral(i,x,0,0.275)
The first two methods work fine. The last method gives me the infinite of the following messages.
;;; ;;; Detected access to protected memory, also kwown as 'bus or segmentation fault'. ;;; Jumping to the outermost toplevel prompt ;;;
This is a bug, isn't it? However, i have no idea how integrate() works.