1. Evaluate :
This equation can be written as; .................(i) We know that
Therefore, equation (i) becomes; = 0
So, the answer is 0.
CBSE Board Exam Dates 2027 LIVE: Class 10, 12 subject-wise timetable at cbse.gov.in soon; passing marks
CBSE Date Sheet 2027 LIVE: Class 10, 12 exam dates at cbse.gov.in soon; timetable, guidelines, updates
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