indeterminable vs undeterminable

indeterminable and undeterminable both are adjectives.

Word	Noun	Adjective	Verb	Adverb
indeterminable	No	Yes	No	No
undeterminable	No	Yes	No	No

As adjectives, indeterminable and undeterminable are synonyms defined as:

indeterminable and undeterminable: not capable of being definitely decided or ascertained

indeterminable (adjective)	undeterminable (adjective)
not capable of being definitely decided or ascertained	not capable of being definitely decided or ascertained
incapable of being definitely ascertained or calculated