imaginary numbers

5 facts about imaginary numbers

• Heron of Alexandria was the first to have discoverd these numbers.
• Imaginary numbers were used in electrical engineering.
• Imaginary numbers dates all the way back to the 1st century.
• Imaginary numbers were used to help in transmitting radio waves.
• imaginary numbers are useful because we could listen to the radio . 

picture of imaginary number

2nd picture of an imaginary numbers

examples problems

• i2=-1
• 1-6i+3-2i
• 2+5i+6-8i
• 5+9i
• 4-8i

class activity

• i2=
• can you solve this