Same chapter3 marksDifficulty: Medium
Find the maximum and minimum values of f(x) = x3 − 6x2 + 9x + 5.
Applications of Derivatives
3 marksDifficulty: Medium
Use differentials to find the approximate value of √36.6.
Original Khojo Papers practice question — not from a past board paper.
Answer
About 6.05
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
Take y = √x with x = 36 and Δx = 0.6. Then dy = Δx ÷ (2√x) = 0.6 ÷ 12 = 0.05, so √36.6 ≈ 6 + 0.05.
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