When air enters a compressor at pressure 
and leaves at pressure 
, the intermediate pressure is given by 
. Assume that = 10.1 ± 0.3 MPa and = 20.1 ± 0.4 MPa.
a. Estimate 
, and find the uncertainty in the estimate.
b. Which would provide a greater reduction in the uncertainty in : reducing the uncertainty in 
to 0.2 MPa or reducing the uncertainty in 
to 0.2 MPa?
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