Q32 of 138 Page 24

Find if

(i) and


(ii) and


(iii) and

(i) using formula,


Substituting the given values in above equation we get,




(ii) using formula,



Substituting the given values in above equation we get,




(iii) using formula,



Substituting the given values in above equation we get,




Now this will yield imaginary value.


We know that,


Therefore,


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