Ok so i'm rather stuck on this one question, help would be much appreciated:

I have used the capital S as an integral sign with the values above and below it as the limits of the integration, also please ignore the underscores, i put them in to aid with the spacing

by changing the order of integration, evaluate

y=4 x=y^0.5

S_____S______exp(y/x) dx dy

y=0 x=(y/2)

Draw a sketch of the area and directions of integration.

Thanks in advance