Algebra

Question 1

How do you get e as a limit?

Answer 1

Compound interest at 100% per year per periods

(1+100%/n)^n

n-> infinity, this thing goes to e

2.71818

Question 2

What does log_e 67 mean?

Answer 2

e^x = 67, find x

e is the base

ln, from french, log naturale

(maybe)

Question 3

What is Cython?

Answer 3

Cython is a superset of Python

Instead of passing to Python interp, it translates to C and then compiles that.

%load_ext Cython

%%cython
def fib3(int n):
 cdef int b = 1 # \<-- this is the best trick to make it run faster; use C types
 cdef int a = 0
 cdef int t = 0
 while b \< n:
 t = a
 a = b
 b = t + b

Question 4

How is RF like KNN?

Answer 4

RF is like nearest neighbors in tree space