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false | ใใใใใในใฆใฎ้ขๆฐใซ้้ขๆฐใใใใใใงใฏใใใพใใใ้ขๆฐ f: X โ Y ใ้้ขๆฐใๆใคใซใฏใY ใฎไปปๆใฎ y ใซๅฏพใใฆใใกใใใฉ 1 ใคใฎ x ใๅญๅจใใฆ f(x) = y ใจใชใๅฟ
่ฆใใใใพใใใใฎๆง่ณชใๆบใใใใฆใใๅ ดๅใ้ขๆฐ g: Y โ X ใๅญๅจใใฆใf ใจใฎ้ใซๅฟ
่ฆใช้ขไฟใๆ็ซใใพใใ | ใใใใ | if a function is not one to one does it have an inverse | Not all functions have inverse functions. In order for a function f: X โ Y to have an inverse, it must have the property that for every y in Y there must be one, and only one x in X so that f(x) = y. This property ensures that a function g: Y โ X will exist having the necessary relationship with f. | ้ขๆฐใใใฃใใๅๅฐใงใชใใชใใฐ้้ขๆฐใๅญๅจใใใ |