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91Ó°ÊÓ

Find the signed volume between the graph of the given function and the xy-plane over the specified rectangle in the xy-plane

f(x,y)=xyWhereR={(x,y)|-2≤x≤3,-1≤y≤5}

Short Answer

Expert verified

The value of integral is 24cubicunits

Step by step solution

01

Given information

We are given an region

f(x,y)=xyWhereR={(x,y)|-2≤x≤3,-1≤y≤5}

02

Find the volume

f(x,y)>0whenR1={(x,y)|0≤x≤3,0≤y≤5}andf(x,y)<0whenR1={(x,y)|-2≤x≤0,-1≤y≤0}

And

∫RxydA=∫R1xydA-∫R2xydA=∫05∫02xydxdy-∫-10∫-20xydxdy=[x2y24]-[x2y24]=25-1=24cubicunits

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