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I may be wrong but it seems Sage 9.1 is the only version available on Jupyter.

I am using the online version SageMath 9.1 at http://127.0.0.1:8888/notebooks... The value of the integral is a^(-1/4)*B

computation of an integral How to compute the integral from a>0 to infinity of (x-a)^(-1/2)*x^(-3/4) ? integrate(1/(

Is it normal that the second integral can't be computed ?

show(numerical_integral((x)^(-2/3),0,1)); show(numerical_integral((1-x)^(-2/3),0,1));

(2.99999987765,2.57881950224×10−06)
(+infinity,NaN)

Thanks

Wonderful ! Thank you (sorry that I can't upvote).

for instance: A = x; B = y;

Assume I have two contour plots, of functions A and B, say, depending on x and y, with one level curve on each plot. There are two different zones in each plot, filled with two colors, like in the following:

Gr=Graphics(); 
Gr += contour_plot(A,(x,0,10),(y,0,10),contours=1,cmap=['white', 'red']);
Gr += contour_plot(B,(x,0,10),(y,0,10),contours=1,cmap=['yellow', 'blue']);
show(Gr);

The problem is that the resulting picture only shows the filling colors of the second plot.

How do I get a picture with each zone (from both plots) in a different color ? some kind of transparency ?

Sorry if my question is trivial,

Thanks !