phương trình

== Vietnamese == === Etymology === Sino-Vietnamese word from 方程. === Pronunciation === (Hà Nội) IPA(key): [fɨəŋ˧˧ t͡ɕïŋ˨˩] (Huế) IPA(key): [fɨəŋ˧˧ ʈɨn˦˩] (Saigon) IPA(key): [fɨəŋ˧˧ ʈɨn˨˩] === Noun === phương trình (mathematics) an equation ==== Usage notes ==== Similarly to a bất phương trình (“inequation”), a 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 đẳng thức (“equality”) which is not to be solved, but to be proven. ==== Derived terms ==== === See also === hệ phương trình