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1992Cheap-Fast Versus Expensive-Slow Hedge 22One hedge book is much cheaper, so the optimizer should lean on it heavily to hit the shared target. Minimize L(x,y) = 2x 2 + 8y 2 subject to 1x + 1y = 18.数学简单数值题未尝试免费1993Three-Book Allocation With Uneven Penalties 23The quadratic penalties differ across books, so the minimum-cost total-size allocation will be visibly asymmetric. Minimize Q(x,y,z) = 2x 2 + 3y 2 + 6z 2 subject to x+y+z = 22.数学简单数值题未尝试免费1994Spread-Constrained Allocation With Uneven Penalties 24The spread target fixes how far apart the outer books must sit, while the middle book absorbs the rest. Minimize 1x 2 + 2y 2 + 3z 2 subject to x+y+z=11 and x-z=1.数学中等derivation未尝试免费1995Alpha Maximization With Uneven Risk Units 25The second sleeve has both larger alpha and a different risk unit, so the optimal point must balance both effects. Maximize 4x + 6y subject to 4x 2 + 9y 2 = 225.数学困难derivation未尝试面试订阅