2025 BVSS PRELIMS P1 Q7

2025 BVSS PRELIMS P1 Q7

Secondary 4
6 marks
2025 Bedok View Secondary School Prelims A Math Paper 1
  1. Find \(\frac{\mathrm{d}}{\mathrm{d}x}\left[(x-1)e^{-x}\right]\).[2]
  2. Hence find \(\int xe^{-x}\,\mathrm{d}x\).[4]

Solution:

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Answer:(a) \((2-x)e^{-x}\) (b) \(-(x+1)e^{-x}+C\)

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