2000001505 | math4u.vsb.cz

SubArea:

Quadratic equations with complex roots

Level:

Project ID:

2000001505

Accepted:

0

Clonable:

0

Easy:

1

Which of the numbers below does not satisfy the equation

2 x^{2} = - 16

?

\sqrt{8} (\cos π + i \sin π)

2 \sqrt{2} (\cos \frac{π}{2} + i \sin \frac{π}{2})

2 \sqrt{2} (\cos (- \frac{π}{2}) + i \sin (- \frac{π}{2}))

2 \sqrt{2} i