Imaginary Numbers Flashcards
(9 cards)
1
Q
What does i equal?
A
√(-1)
2
Q
What does i^2 equal?
A
-1
3
Q
What does i^3 equal?
A
-i
4
Q
What does i^4 equal?
A
1
5
Q
What is Polar form?
A
r(cosӨ + isinӨ)
6
Q
Euler’s Theorem
A
e^(a+bc) = (e^a)(cosb + isinb)
7
Q
e^(x)
A
Σ(x^n)/(n!)
8
Q
cosx
A
Σ[(-1^n)(x^2n)/(2n)!]
9
Q
Sinx
A
Σ[(-1^n)(x^(2n+1))]/[(2n+1)!]
