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# Complex number

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### Complex number

1. 1. Disclaimer:This presentation is prepared by trainees ofbaabtra as a part of mentoring program. This is not officialdocument of baabtra –Mentoring PartnerBaabtra-Mentoring Partner is the mentoring division of baabte System Technologies Pvt .Ltd
2. 2. COMPLEX NUMBERS freddy pv email/facebook id : f4freddy@gmail.com
3. 3. Imaginary Numbers are special because:• When squared, they give a negative result• Normally this doesnt happen, because: when you square a positive number you get a positive result, and• when you square a negative number you also get a positive result (because a negative times a negative gives a positive)
4. 4. • But just imagine there is such a number, because we are going to need it!• The "unit" imaginary number (like 1 for Real Numbers) is i, which is the square root of -1• A Complex Number is a combination of a Real Number and an Imaginary Number• 1+i• 39 + 3i• 0.8 - 2.2i• -2 + πi• √2 + i/2
5. 5. • Add and express in the form of a complex number a + b i.• (2 + 3i) + (-4 + 5i) - (9 - 3i) / 3
6. 6. 2) 24/20i = ?
7. 7. 3) ((2+3i)(4-7i))/((4-7i)(5+4i)) = ?
8. 8. • If ((48-12i)/a)=16-4i then find the value of a
9. 9. • i2012 = ?