The angle made by the normal to the curve y=logx where it crosses the x− axis

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π2

3π4

π3

π6

answer is B.

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Detailed Solution

y=log x ………………(1) (1) crosses the x− axis ⇒ put y=0⇒x=1 m=(dydx)(1,0)=1x=1 ∴ slope of normal=−1 ∴ inclination of normal=3π4

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