Let X ={1,2,3,4} Examine the wheather given below is a function from X to X.or not.Explain f =(2,3),(1,4),(2,1),(3,2),(4,4)
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it not a function because x in 2 has two pre images 3 and 1
mahesh2003:
A train covers a distance of 90km at a uniform speed.Had the speed been 15km/hr more,it would have taken 30 minutes less for the journey.Find the original speed of the train.
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