Thread: Double Integral

Find the volume of the solid lying under the plane z=4x+3y+5 and above the rectangle R={(x,y) | -1<= x <= 0 , 2 <=y <=3}











which is wrong. The correct answer is

Can someone help me? I have a feeling I might have miss used -1,0 and 2,3 maybe.
I also have another question similar to this I will need help on because I'm not quite sure where to start.

There's nothing wrong with your set up, must be in the algebra.

I get 21/2.

on the last step I even put it in the calculator and get -28/3. Can't seem to figure out where I have messed up.

I don't know what you're doing. I am getting 21/2. I even tried various arrangements and did not arrive at -28/3

My other question was I need help on this problem as I don't know where to even start. Thanks

Find volume of the solid bounded by the surface

and the plane x=1,x=0,y=1,y=0 and z=0.

Originally Posted by dukebdx12

Check this. (It's just a matter of arithmetic.)

Originally Posted by Krizalid

Check this. (It's just a matter of arithmetic.)

got it now...thankyou