The ranges of the variables in the spherical coordinate system are ○i. O ii. iii. O iv. r> 0,0 ≤ 4 < π,0 ≤ 0 < 2π. r≥ 0,0 ≤ 4 < π,0 ≤ 0 < 2π. r> 0,0 ≤ 4 ≤ π,0 ≤ 0 < 2π. r≥ 0,0 ≤ 4 < π,0 ≤ 0 < 2π. O v. r≥ 0,0 ≤ y ≤ 2π,0 ≤ 0 < π. 4

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