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Chapter: 12th Mathematics : UNIT 2 : Complex Numbers

Exercise 2.2: Complex Numbers

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EXERCISE 2.2

1. Evaluate the following if = 5 - 2and = -1+ 3i

(i) z 

(ii) i w

(iii) 2+ 3w

(iv) zw

(v) z2 + 2zw w2

(vi) ( w)2 .




2. Given the complex number = 2 + 3, represent the complex numbers in Argand diagram.

(i) ziz , and iz (ii) z, - iz , and iz .



3. Find the values of the real numbers and y, if the complex numbers

(3 - i)- (2 - i+ 2+ 5 and 2+ (-1+ 2i+ 3 + 2are equal.



Answers:

1. (i) 4 + i

(ii) 8 - i

(iii) 7 + 5i

(iv) 1+17i

(v) 15 + 8i 

(vi) 15 + 8i

3. x = -1 , y = 1


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12th Mathematics : UNIT 2 : Complex Numbers : Exercise 2.2: Complex Numbers | Problem Questions with Answer, Solution

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12th Mathematics : UNIT 2 : Complex Numbers


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