calc 3 triple integrals

[swift grove]

1. Wait patiently for a helper to come along.
2. Once someone helps you, say thank you and close the thread with: ```diff
   +close

[vernal sierra]

0≤z≤1-y²
-2≤x≤2
-1≤y≤1
dzdydx

[fallow bison]

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