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if i want to evaluate a function and the bounds are defined by z=x^2+y^2 and z = 9 what would the 3 sets of bounds be?

thanks ahead of time!

2007-03-11 20:47:49 · 3 answers · asked by need help! 3 in Science & Mathematics Mathematics

the first equation is a cone, the second a plane. I want the bounds of the triple integral defined by the region contained... please?

2007-03-11 20:53:54 · update #1

it is not a sphere

2007-03-11 20:54:20 · update #2

3 answers

Your bounds on z would be 0 and 9. The upper bound on x is where x^2=9 or x=3, same for y. At any value of z, the x-y section is a circle of radius √z. The radius at z = 9 is 3, and that is the extent of the volume at it's maximum z. Everything joins at x=y=z=0, so that is the lower bound for all axes.

2007-03-11 21:01:54 · answer #1 · answered by gp4rts 7 · 1 0

not sure there is 3. the first equation gives you a sphere and the second gives a plane. so just picture a plane intersecting a sphere. you get a circle.

2007-03-12 03:51:50 · answer #2 · answered by brandon 5 · 0 1

z=9; x=3cost and y=3cost it is a sphere with center (0,0,9)

2007-03-12 03:52:39 · answer #3 · answered by djin 2 · 0 1

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