Final Chapters Test

Simplify √-4

• 2i
• -2i
• 2
• 4i

Calculate:
(4 − 7i) − (-3 + 6i)

• 7 − 13i
• 7 − i 
• 1 − 13i
• 1 − i 

Calculate: 
(1 − 2i) + (-4 + 2i)

• -3
• -3 − 4i
• 5 − 4i
• 5

Calculate (multiply):
 (4 + 3i)(4 − 3i)

• 16 − 9i²
• 25
• 7
• 8 − 6i

Calculate (multiply):
(1 − 2i)(6 + 5i)

• 16 − 7i
• -16 + 7i
• -16 − 7i
• 16 + 7i

Find the resultant vector.

• <5, 3>

• <1, 7>

• <7, 1>

• <3, 5>

Find the magnitude of $<2,\ 4>$  

• 4.47

• 3.52

• 2

• 3.46

Identify the direction of the vector.

• $57\degree$ South of East

• 
• $57\degree$ West of South

• $57\degree$ South of West

Write in component form.

• <0, 4>

• <8, 2>

• <2, 8>

• <0, 2>

Find the magnitude of the vector <10, -8>

• 2

• 12.81

• 6

• 18