偶次根式下非负
non-negative under even root For a function containing an even root (e.g., square root), the domain requires the expression under the radical to be greater than
CSCA 数学 考试术语
non-negative under even root For a function containing an even root (e.g., square root), the domain requires the expression under the radical to be greater than
CSCA 数学 考试术语