Starting with polynomial:
P : 5/2*t^3 - 3/2*t
Extension levels are: 3 8
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Trying to find an order 8 Kronrod extension for:
P1 : 5/2*t^3 - 3/2*t
Solvable: 1
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Ending with final polynomial:
P : 5/2*t^11 - 10483/1482*t^9 + 1617/221*t^7 - 69993/20995*t^5 + 68299/109174*t^3 - 3633/109174*t
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Computing nodes and weights
  current precision for roots: 53
  current precision for roots: 106
 current precision for weights: 53
Linear system for weights solvable: 1
  current precision for roots: 106
  current precision for roots: 212
 current precision for weights: 106
Linear system for weights solvable: 1
Sufficient bits for target precision reached
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The nodes are:
| (0.99079325588510780584 - 1.2410704871707510219e-184j)  +/-  (6.41e-61, 6.41e-61j)
| (-0.2919991541426287378 - 1.5369738672137773073e-186j)  +/-  (5.37e-63, 5.37e-63j)
| (-0.99079325588510780584 + 1.9750832405784521472e-186j)  +/-  (6.92e-61, 6.92e-61j)
| (-0.55806685067819680295 - 9.8193058835576456181e-189j)  +/-  (6.6e-62, 6.6e-62j)
| (0.77459666924148337704 - 1.0997622589584563092e-188j)  +/-  (3.7e-61, 3.7e-61j)
| (0.55806685067819680295 + 9.3151897332857129189e-193j)  +/-  (6.75e-62, 6.75e-62j)
| (2.0066613913040799314e-196 + 1.6387734695649986107e-196j)  +/-  (2.85e-195, 2.85e-195j)
| (-0.9225217132136291628 - 1.6425937279408791299e-202j)  +/-  (1.08e-60, 1.08e-60j)
| (-0.77459666924148337704 + 9.0301849399020091617e-211j)  +/-  (3.84e-61, 3.84e-61j)
| (0.2919991541426287378 - 3.6260443998244472952e-216j)  +/-  (5.37e-63, 5.37e-63j)
| (0.9225217132136291628 + 4.9858110497586150309e-217j)  +/-  (9.37e-61, 9.37e-61j)
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The weights are:
| (0.02983816535825558451 + 1.0009241262968528404e-184j)  +/-  (7.65e-22, 1.32e-51j)
| (0.28323745421592778419 + 1.2830553206309246328e-185j)  +/-  (4e-22, 6.89e-52j)
| (0.02983816535825558451 + 3.6057991754922938275e-186j)  +/-  (6.86e-23, 1.18e-52j)
| (0.24492708007832102816 - 1.1626521935926026835e-185j)  +/-  (2.04e-22, 3.52e-52j)
| (0.18491687080564619256 + 5.8772366447975696235e-185j)  +/-  (2.89e-23, 4.97e-53j)
| (0.24492708007832102816 - 3.3920728588262982189e-185j)  +/-  (2.6e-23, 4.47e-53j)
| (0.29639979944411543641 - 1.5257397439986677714e-185j)  +/-  (2.44e-23, 4.2e-53j)
| (0.10888052981979169237 - 7.5404929207214524539e-186j)  +/-  (4.42e-24, 7.61e-54j)
| (0.18491687080564619256 + 8.8733039837613411356e-186j)  +/-  (5.13e-24, 8.82e-54j)
| (0.28323745421592778419 + 2.2329151128444276323e-185j)  +/-  (2.25e-24, 3.98e-54j)
| (0.10888052981979169237 - 1.381584456867709987e-184j)  +/-  (1.3e-24, 2.04e-54j)
