Wednesday, 9 October 2013

ARTILLERY TARGET

An artillery target may be either at point A with probability 8/9 or at point B with probability 1/9, we have 21 shells, each of which can be fired either at point A or at point B. Each shell may hit target independently of the other shells, with probability 1/2. How many shells must be fired at point A to hit the target with maximum probability? 

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Define f:RR by \[f(x)= \begin{cases}(1-\cos x) \sin \left(\frac{1}{x}\right), & x \neq 0 \ 0, ...