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Let \( f(x)=x-\frac{1}{x} \) then \( f^{\prime}(-1) \) is
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Verified Answer
The correct answer is:
\( 12 \)
Given that, \( f(x)=x-\frac{1}{x} \)
So, \( f^{\prime}(x)=1+\frac{1}{x^{2}} \)
\( f^{\prime}(-1)=1+\frac{1}{(-1)^{2}}=1+1=2 \)
So, \( f^{\prime}(x)=1+\frac{1}{x^{2}} \)
\( f^{\prime}(-1)=1+\frac{1}{(-1)^{2}}=1+1=2 \)
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