mathematics tag

13 questions

1 answers
54 views
0

What are the "-" and "j" of "-9.96587885e+03j" with the number 1.54991569e+03-9.96587885e+03j?

When I ran scipy.ftpack.ft(y), one of the returned values had the following numbers:1.54991569e+03-9.96587885e+03jI understand that e+03 means the third power of 10, but -9.96587885e+03jWhat are '-' a...

python mathematics

1 years ago

2 answers
92 views
0

How many ways are there to go up the n-step stairs when you decide to go up a prime number of steps, such as going up two steps, going up three steps, going up five steps?

Nice to meet you, I'm a Python beginner.How many ways to go up the n-step stairs when you decide to go up one, two, three, five, etc.? where n is a natural number less than or equal to 50.Rule: Use on...

python algorithm mathematics

1 years ago

1 answers
57 views
0

I don't understand the flow of the correlation matrix calculation

I don't understand the flow of the correlation matrix calculation.#Create correlation matrixR=np.corrcoef(X.T)# set the diagonal component to zero_R=R-np.identity(10)# Get index with maximum correlati...

python machine-learning numpy mathematics

1 years ago

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