Hello Folks,
This works ==========
var('x')
f1(x) = 2
f2(x) = 4-x
f3(x) = exp(x)/10
f4(x) = sin(2*x)
f = Piecewise([[(0,1),f1],[(1,2),f2],[(2,3),f3],[(3,10),f4]])
F = f.integral()
F.plot()
This does not (f1 changed, nothing else) ================
var('x')
f1(x) = 1
f2(x) = 4-x
f3(x) = exp(x)/10
f4(x) = sin(2*x)
f = Piecewise([[(0,1),f1],[(1,2),f2],[(2,3),f3],[(3,10),f4]])
F = f.integral()
F.plot()
the error is :
Traceback (click to the left for traceback)
...
ValueError: free variable: x |--> x
Any idea why this happened ?
Thanks (very much) for any advice or comment.
Philippe Saadé
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