2025 TKSS PRELIMS P1 Q1
2025 TKSS PRELIMS P1 Q1
Secondary 4
4 marks
2025 Tanjong Katong Secondary School Prelims A Math Paper 1
- Find \(\dfrac{d}{dx}\left(\dfrac{1}{2e^x+1}\right)\).[2]
- Hence find \(\displaystyle \int \dfrac{e^x}{(2e^x+1)^2}\, dx\)[2]
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Answer:(a) \(\displaystyle -\frac{2e^x}{(2e^x+1)^2}\) (b) \(\displaystyle -\frac{1}{2(2e^x+1)}+C\)
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