Home › CBSE Class 12 (Commerce) › Mathematics › Continuity and Differentiability › Evaluate y'' for y = log x.
Evaluate y'' for y = log x.
A1/x^2
B-1/x^2
C1/x
D-1/x
Answer & Solution
Correct answer: B. -1/x^2
The first derivative is 1/x, and differentiating x^-1 once more gives -1/x^2.
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