erweitern (cos(3t)-1/3 cos^3(3t))cos(3t)

Lösung

erweitern

(cos (3 t) - \frac{1}{3} cos^{3} (3 t)) cos (3 t)

cos^{2} (3 t) - \frac{1}{3} cos^{4} (3 t)

Schritte zur Lösung

(cos (3 t) - \frac{1}{3} cos^{3} (3 t)) cos (3 t)

= cos (3 t) (cos (3 t) - \frac{1}{3} cos^{3} (3 t))

Wende das Distributivgesetz an:

a (b - c) = ab - a c

cos (3 t) (cos (3 t) - \frac{1}{3} cos^{3} (3 t)) = cos (3 t) cos (3 t) - cos (3 t) \frac{1}{3} cos^{3} (3 t)

= cos (3 t) cos (3 t) - cos (3 t) \frac{1}{3} cos^{3} (3 t)

cos (3 t) cos (3 t) = cos^{2} (3 t)

cos (3 t) \frac{1}{3} cos^{3} (3 t) = \frac{1}{3} cos^{4} (3 t)

= cos^{2} (3 t) - \frac{1}{3} cos^{4} (3 t)

e x p an d x^{\frac{4}{5}} (2 x - 2)

s im pl i f y (2 u + \frac{2}{19} v)^{2}

e x p an d lo g_{9} (16)

e x p an d (x + 3)^{2} l e f t (2 x + 4)

e x p an d A (0, 0, 1) B (1, 1, 2) C (0, - 1, - 1)