erweitern cos(3t)U(t-(7pi)/2)

Lösung

erweitern

cos (3 t) U (t - \frac{7 π}{2})

t U cos (3 t) - \frac{7 π U cos ( 3 t )}{2}

Schritte zur Lösung

cos (3 t) U (t - \frac{7 π}{2})

= U cos (3 t) (t - \frac{7 π}{2})

Wende das Distributivgesetz an:

a (b - c) = ab - a c

a = cos (3 t) U, b = t, c = \frac{7 π}{2}

= cos (3 t) U t - cos (3 t) U \frac{7 π}{2}

= t U cos (3 t) - \frac{7 π}{2} U cos (3 t)

Vereinfache

t U cos (3 t) - \frac{7 π}{2} U cos (3 t) : t U cos (3 t) - \frac{7 π U cos ( 3 t )}{2}

= t U cos (3 t) - \frac{7 π U cos ( 3 t )}{2}

e x p an d V (2, - 3) F (2, - 4)

e x p an d (4 m + 2 n = 70,) (- 3 m + 4 n = 30)

e x p an d \frac{1}{( x + n + 1 ) ^{2}}

e x p an d 3 (403)

e x p an d - sin (x y) (y + x \frac{d y}{d x} = 12 y^{2} \frac{d y}{d x} + 6 x)