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George Lifin Rell posted an Question
March 19, 2021 • 03:55 am
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30 points
30 points
- IIT JAM
- Mathematics (MA)
Why z is from x2 to 2 and not 2 to x2
Example: If F= 2zi + xj + yk. Evaluate F dV where V is the region bounded by the surfaes x = 0, y = 0, x = 2, y = 4, z = x, z = 2. Solution. FdV= f f (2zi-xj +yk)dz dx dy y-0 x-0 z-x
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Alka gupta Best Answer
first of all bounded region is in 3D....so we can't plot a diagram ....z= x^2 to z=2 or z=2 to z=x^2 its just depands on imagination
Doesn't it creates an negative error if we imagine it in the other way?
yes definitely....if we change upper and lower limits than ans multiple by - sign
u have to imagine which surface lies upside which lies downside.....
its completely depand on practice