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a-lt-pi-2-if-M-lt-1-with-cos-x-cos-y-M-x-y-to-each-x-y-0-a-M-




Question Number 11087 by suci last updated on 11/Mar/17
a<(π/2)  if M<1 with ∣cos x−cos y∣≤M∣x−y∣  to each x,y∈[0,a]  M=....???
a<π2ifM<1withcosxcosy∣⩽Mxytoeachx,y[0,a]M=.???

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