using differentiation prove that for every x in R on has

cosx>or= 1-(x^2)/2

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- January 18th 2010, 06:54 PMamm345How do you prove using differentiation?
using differentiation prove that for every x in R on has

cosx>or= 1-(x^2)/2 - January 18th 2010, 06:59 PMDrexel28