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even root

[even root|even root] is an even root of a negative number, defined as an imaginary number.

Definition

even root is an even root of a negative number, defined as an imaginary number.

Mechanism

even root [even root] requires setting the radicand greater than or equal to 0 when solving for the domain of a function containing it in equation form.

Examples

Given a function written in equation form including even root, find the domain.