bất đẳng thức

== Vietnamese == === Etymology === Sino-Vietnamese word from 不等式. === Pronunciation === (Hà Nội) IPA(key): [ʔɓət̚˧˦ ʔɗaŋ˧˩ tʰɨk̚˧˦] (Huế) IPA(key): [ʔɓək̚˦˧˥ ʔɗaŋ˧˨ tʰɨk̚˦˧˥] (Saigon) IPA(key): [ʔɓək̚˦˥ ʔɗaŋ˨˩˦ tʰɨk̚˦˥] === Noun === bất đẳng thức (mathematics) an inequality ==== Usage notes ==== Similarly to a đẳng thức (“equality”), a bất đẳng thức is to be proven, which means the presence of signs such as <, ≤, >, ≥ must be determined as true under the given conditions of the variable(s). Compare with a bất phương trình (“inequation”) which is not to be proved, but to be solved.