Hi, step by step please, the question is COMPLETE

Given the demand function = +

a)i)Find the arc elasticity of demand when increases from 10 to 11

ii) increases from 40 to 41

b)Find the point elasticity of demand when

i) = ii) =

c)Compare the answers obtained in (a) and (b) and provide a mathematical explanation for what you observe.

d)Find the point at which demand is unit-elastic.

e)Sketch the demand function indicating the solutions to (b) and (d).

f)Why is demand elastic when is high and inelastic when is low in this example?