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SIMON-MARAIS 2019 B1

  • Paper B

Determine all pairs (a,b)(a,b) of real numbers with a⩽ba\leqslant b that maximise the integral ∫abecos⁡(x)(380−x−x2)dx.\int_a^b e^{\cos (x)}(380-x-x^2) \mathrm{d} x.

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