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T2688.hs:8:22:
Could not deduce (s ~ v)
from the context (VectorSpace v s)
bound by the class declaration for ‛VectorSpace’
at T2688.hs:(5,1)-(8,23)
‛s’ is a rigid type variable bound by
the class declaration for ‛VectorSpace’ at T2688.hs:5:21
‛v’ is a rigid type variable bound by
the class declaration for ‛VectorSpace’ at T2688.hs:5:19
Relevant bindings include
(^/) :: v -> s -> v (bound at T2688.hs:8:5)
v :: v (bound at T2688.hs:8:5)
s :: s (bound at T2688.hs:8:10)
In the second argument of ‛(/)’, namely ‛s’
In the second argument of ‛(*^)’, namely ‛(1 / s)’
In the expression: v *^ (1 / s)
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