Grundläggande matematik

The exercise was created 2017-10-21 by kaelg001. Question count: 33.




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  • heltal
  • rationella tal
  • reella tal
  • komplexa tal
  • naturliga tal
  • 0 radianer 0, 1
  • π/6 1/2, √(3)/2
  • π/4 √(2)/2, √(2)/2
  • π/3 √(3)/2, 1/2
  • π/2 1, 0
  • 2π/3 √(3)/2, -1/2
  • 3π/4 √(2)/2, -√(2)/2
  • 5π/6 1/2, -√(3)/2
  • π 0, -1
  • 7π/6 -1/2, -√(3)/2
  • 5π/4 -√(2)/2, -√(2)/2
  • 4π/3 -√(3)/2, -1/2
  • 3π/2 -1, 0
  • 5π/3 -√(3)/2, 1/2
  • 7π/4 -√(2)/2, √(2)/2
  • 11π/6 -1/2, √(3)/2
  • 0, 1
  • e^(iv) cos, sin cos(v) + i sin(v)
  • Cosinussatsen a^2 = b^2 + c^2 − 2bc ⋅ cos(v)
  • Additionsformeln för sinus sin(v + w) = sin(v) cos(w) + cos(v) sin(w)
  • Subtraktionsformeln för sinus sin(v - w) = sin(v) cos(w) - cos(v) sin(w)
  • Additionsformeln för cosinus cos(v + w) = cos(v) cos(w) - sin(v) sin(w)
  • Subtraktionsformeln för cosinus cos(v - w) = cos(v) cos(w) + sin(v) sin(w)
  • Formeln för sinus dubbla vinkeln sin(2v) = 2 sin(v) cos(v)
  • Formeln för cosinus dubbla vinkeln cos(2v) = cos^2(v) - sin^2(v), cos(2v) = 2 cos^2(v) − 1, cos(2v) = 1 − 2 cos^2(v)
  • Trigonometriska ettan sin^2(v) + cos^2(v) = 1
  • {n \över k} n!/(k!(n-k)!)
  • (x + y)^n där n ∈ ℕ och x och y ∈ ℂ (n)(s = 0)∑{n \över s} x^(n-s) y^(s)

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