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Fixes to questions 2, 9, 18, 31, 35, 44, 52, 56, 66 & 78 #106

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Fixes to questions 2, 9, 18, 31, 35, 44, 52, 56, 66 & 78 #106

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bffecc9
Fix hint 2
Mar 11, 2020
4dd6265
Fix answer 9
Mar 11, 2020
ebd2b73
Optimize answer 18
Mar 11, 2020
d3a5117
Fix alternative answer 31
Mar 11, 2020
861e5d6
Simplify setup of answer 35
Mar 11, 2020
e5a13fd
Simplify answer 44 using np.hypot
Mar 11, 2020
c36f064
Simplify answer 52 using np.hypot
Mar 12, 2020
7d40613
Simplify answer 56 using np.hypot
Mar 12, 2020
d43e208
Fix answer 66
Mar 13, 2020
02b7c17
Simplify answer 78
Mar 14, 2020
52fa50e
Run generators
Mar 14, 2020
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Simplify answer 44 using np.hypot
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Nikolaos Korasidis committed Mar 11, 2020
commit e5a13fdb4d10bbd95c3ce06ab13f3f6369a8b41e
4 changes: 2 additions & 2 deletions source/exercises100.ktx
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Expand Up @@ -527,12 +527,12 @@ Z[0] = 1
Consider a random 10x2 matrix representing cartesian coordinates, convert them to polar coordinates (★★☆)

< h44
hint: np.sqrt, np.arctan2
hint: np.hypot, np.arctan2

< a44
Z = np.random.random((10,2))
X,Y = Z[:,0], Z[:,1]
R = np.sqrt(X**2+Y**2)
R = np.hypot(Y,X)
T = np.arctan2(Y,X)
print(R)
print(T)
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