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We only adjust the boundaries when there are gaps between boundaries. If the boundaries given were 1-40 then 41-50, you might see that data between 40-41 is not included. When we plot the graph, our line is continuous, (it isn't broken from 40-41 where data doesn't exist!), in order to make...

For (iii) we know the range of sin x is -1 to 1 -1 < sin x < 1 -3 <3 sin x <3 3 > -3sinx> -3 3+4 > 4 - 3 sinx > -3 +4 7 > 4-3sinx > 1 For (iv), you might know that only 1-1 function has inverse...