plz find the value
In a^2+1/a^2=62 find the value of a-1/a
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Solution :
Given a² + 1/a² = 62 ---( 1 )
( a - 1/a )² = a² + 1/a² - 2×a×1/a
= 62 - 2
= 60
a - 1/a = √60
= √( 4 × 15 )
= 2√15
•••••
Given a² + 1/a² = 62 ---( 1 )
( a - 1/a )² = a² + 1/a² - 2×a×1/a
= 62 - 2
= 60
a - 1/a = √60
= √( 4 × 15 )
= 2√15
•••••
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