bất phương trình

== Vietnamese == === Etymology === Sino-Vietnamese word from 不 (“un-; in-”) and 方程 (“equation”). === Pronunciation === (Hà Nội) IPA(key): [ʔɓət̚˧˦ fɨəŋ˧˧ t͡ɕïŋ˨˩] (Huế) IPA(key): [ʔɓək̚˦˧˥ fɨəŋ˧˧ ʈɨn˦˩] (Saigon) IPA(key): [ʔɓək̚˦˥ fɨəŋ˧˧ ʈɨn˨˩] === Noun === bất phương trình (mathematics) an inequation ==== Usage notes ==== Similarly to a phương trình (“equation”), a bất phương trình is to be solved, which means the specific value(s) or range(s) of values of its unknown(s) must be determined. Compare with a bất đẳng thức (“inequality”) which is not to be solved, but to be proven.