Formulae Flashcards
(7 cards)
1
Q
De moivre’s formula
A
(cos(θ) +isin(θ))^n = cos(nθ)+isin(nθ)
2
Q
Euler’s formula
A
e^(iθ) = cos(θ) + isin(θ)
3
Q
Cos in exp
A
Cos(nθ) = (e^(inθ)+e^(-inθ))/2
4
Q
Sin in exp
A
Sin(nθ) = (e^(inθ)-e^(-inθ))/(2i)
5
Q
Cos in complex
A
(Z^n + 1/(Z^n))/2
6
Q
Sin in Complex
A
(Z^n - 1/(Z^n))/2i
7
Q
Quotient rule
A
(f’(x)g(x)-f(x)g’(x))/((g(x))^2)
