Question

calcule a determinante a seguir :

E = cos x sen 2x
1 2 sen x​

Answer 1

E=cos(x).2sen(x) -sen(2x)
E=2sen(x).cos(x) - sen(2x)
E=sen(2x)-sen(2x)
E=0

Answer 2

E=cos x sen 2
1. 2 sen