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Imaginary Unit
 i = i
 i^2 = 1
 i^3 = i
 i^4 = 1
 i^5 = i


Complex Number Standard Form
 A+Bi
 Example:

Descartes's Rule of Signs
 Positive: Count sign change
 Negative: Plug in x for every X and count sign change.

Asymptotes
Places not touch by two squeezing lines

Upper Bound & Lower Bound
 Synthetic Division.
 Upper= x>0
 Lower= x<0

Compounding
A = P(1+r/n)^(nt)

Compounding Continuously
A = Pe^(rt)

