値域 ちいき Meanings Noun range (of a function) Kanji 値 value. Read as チ. 域 region. Read as イキ. Example sentences f(x) = 2x+1の定義域がA=[1,2]のとき、fの値域はf(A) = [3,5]となる。For f(x)=2x+1, when the domain of the function is [1,2], the range is [3,5]. Word lists Mathematics Jinuma: Japanese Dictionary · Word lists