I've had this problem like several times today, doing integrals of the form
I=1/sqrt(1+(z-z1)^2)
from sage.symbolic.integration.integral import indefinite_integral
indefinite_integral(I,z)
Long error follows, ending with
ValueError: Computation failed since Maxima requested additional constraints; using the 'assume' command before evaluation *may* help (example of legal syntax is 'assume(z1>0)', see `assume?` for more details)
Is z1 zero or nonzero?
So I get that Maxima might want to know if z1 happens to be zero, but unfortunately:
", ".join(map(str, maxima("features")._sage_()))
'integer, noninteger, even, odd, rational, irrational, real, imaginary, complex, analytic, increasing, decreasing, oddfun, evenfun, posfun, constant, commutative, lassociative, rassociative, symmetric, antisymmetric, integervalued'
So how am I supposed to tell Maxima this is "nonzero" if....I can't assume something is nonzero?
