Write the expression as a pure imaginary number.

A. -2i
B. -2
C. 2i
D. 2


Answer: C

Mathematics

You might also like to view...

Find the flux of the curl of field F through the shell S.F = -6yi + 2zj - 2xk; S: r(r, ?) = r cos ?i + r sin ?j + (25 - r2)k, 0 ? r ? 5 and 0 ? ? ? 2?

A. 150? B. 30? C. -150? D. 150

Mathematics

Graph.y = -  

A.

B.

C.

D.

Mathematics

Evaluate the determinant.

A. -18 B. -420 C. 420 D. -16

Mathematics

Find an equation of the parabola described.Focus at (-3, 0); directrix the line x = 3

A. y2 = 12x B. y2 = -12x C. y2 = -3x D. x2 = -12y

Mathematics