erweitern (a+b)cos(c)+(a+c)cos(b)+(b+c)cos(a)

Lösung

erweitern

(a + b) cos (c) + (a + c) cos (b) + (b + c) cos (a)

a cos (c) + b cos (c) + a cos (b) + c cos (b) + b cos (a) + c cos (a)

Schritte zur Lösung

(a + b) cos (c) + (a + c) cos (b) + (b + c) cos (a)

= cos (c) (a + b) + cos (b) (a + c) + cos (a) (b + c)

Schreibe

cos (c) (a + b)

um:

a cos (c) + b cos (c)

= a cos (c) + b cos (c) + cos (b) (a + c) + cos (a) (b + c)

Schreibe

cos (b) (a + c)

um:

a cos (b) + c cos (b)

= a cos (c) + b cos (c) + a cos (b) + c cos (b) + cos (a) (b + c)

Schreibe

cos (a) (b + c)

um:

b cos (a) + c cos (a)

= a cos (c) + b cos (c) + a cos (b) + c cos (b) + b cos (a) + c cos (a)

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

e x p an d (x - 2) e^{2 x}

s im pl i f y \frac{1}{2} (3 i - j)

e x p an d \frac{4 x - 12}{( x - 2 ) ^{2}}

e x p an d (e - 2)^{2}