JEE Main 2022 — Application Of Derivatives Question with Solution
From: JEE Main 2022 (Online) 28th June Morning Shift
Question
Let l be a line which is normal to the curve y = 2x2 + x + 2 at a point P on the curve. If the point Q(6, 4) lies on the line l and O is origin, then the area of the triangle OPQ is equal to ___________.
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Show full solutionCorrect answer: 13
Step-by-step explanation
So
Area = \left| {{1 \over 2}\left| {\matrix{ 0 & 0 & 1 \cr 6 & 4 & 1 \cr 1 & 5 & 1 \cr } } \right|} \right| = 13.
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