Starting with polynomial:
P : 3/2*t^2 - 1/2
Extension levels are: 2 3 10
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Trying to find an order 3 Kronrod extension for:
P1 : 3/2*t^2 - 1/2
Solvable: 1
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Trying to find an order 10 Kronrod extension for:
P2 : 3/2*t^5 - 25/14*t^3 + 3/7*t
Solvable: 1
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Ending with final polynomial:
P : 3/2*t^15 - 61157207/11447800*t^13 + 3237322021/425329800*t^11 - 247214528/44659629*t^9 + 215329367/99243620*t^7 - 4051191133/9158768360*t^5 + 5596988947/137381525400*t^3 - 336966223/297659971700*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:
| (0.98560249447777344363 - 1.1482208583664397801e-202j)  +/-  (5.44e-60, 5.44e-60j)
| (-0.82637721956277310144 - 2.8373411408642001334e-205j)  +/-  (1.07e-59, 1.07e-59j)
| (-0.92582009977255146157 - 3.4645492704162992624e-207j)  +/-  (1.03e-59, 1.03e-59j)
| (0.57735026918962576451 - 2.691337308572731859e-206j)  +/-  (1.28e-60, 1.28e-60j)
| (0.82637721956277310144 + 2.0199097891886073125e-209j)  +/-  (9.53e-60, 9.53e-60j)
| (0.70603108134469970334 + 7.4362238668274798046e-219j)  +/-  (4.51e-60, 4.51e-60j)
| (-0.21567287737000955147 - 1.4750810282708318704e-222j)  +/-  (7.54e-63, 7.54e-63j)
| (-0.57735026918962576451 - 7.2273567158060978384e-221j)  +/-  (1.22e-60, 1.22e-60j)
| (-0.41440203197281422383 + 8.2399214949194820601e-223j)  +/-  (1.18e-61, 1.18e-61j)
| (0.41440203197281422383 + 6.678183044318307814e-228j)  +/-  (1.25e-61, 1.25e-61j)
| (0.92582009977255146157 + 4.4880465303784713041e-232j)  +/-  (1.25e-59, 1.25e-59j)
| (0.21567287737000955147 + 1.240837146242733887e-235j)  +/-  (7.54e-63, 7.54e-63j)
| (-0.98560249447777344363 - 1.5273353863455116518e-233j)  +/-  (5.14e-60, 5.14e-60j)
| (-0.70603108134469970334 - 3.1971136557352618947e-236j)  +/-  (5.18e-60, 5.18e-60j)
| (-6.6818787474699435676e-268 + 2.0518857116876540587e-267j)  +/-  (3.24e-266, 3.24e-266j)
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The weights are:
| (0.03676633444683885938 + 1.581312761709882729e-202j)  +/-  (4.1e-18, 1.64e-46j)
| (0.1141093595898578379 + 2.2941615408101444926e-203j)  +/-  (1.77e-18, 7.08e-47j)
| (0.08162955831071442095 - 8.9966898220451951226e-204j)  +/-  (1.52e-18, 6.08e-47j)
| (0.14133735248951406739 + 2.4788293999236986849e-202j)  +/-  (3.8e-19, 1.52e-47j)
| (0.1141093595898578379 + 2.6321214939918288203e-202j)  +/-  (1.93e-19, 7.7e-48j)
| (0.12289319402687234361 - 2.8375302697743880311e-202j)  +/-  (1.73e-19, 6.94e-48j)
| (0.2102203323116699627 + 6.9630903176306985285e-203j)  +/-  (2.27e-20, 9.09e-49j)
| (0.14133735248951406739 + 6.4457404612733609936e-203j)  +/-  (8.6e-21, 3.44e-49j)
| (0.18385985991704187656 - 6.7581563029199818253e-203j)  +/-  (1.33e-20, 5.31e-49j)
| (0.18385985991704187656 - 1.6602500289226229009e-202j)  +/-  (8.45e-21, 3.38e-49j)
| (0.08162955831071442095 - 2.8333362145775117349e-202j)  +/-  (2.62e-21, 1.05e-49j)
| (0.2102203323116699627 + 1.0874483382830769266e-202j)  +/-  (2.74e-21, 1.1e-49j)
| (0.03676633444683885938 + 2.1610303935821931927e-204j)  +/-  (6.38e-23, 2.57e-51j)
| (0.12289319402687234361 - 4.6404410861150301317e-203j)  +/-  (8.02e-22, 3.24e-50j)
| (0.21836801781498126302 - 8.1067837941725368036e-203j)  +/-  (6.35e-22, 2.49e-50j)
