# algebra 2

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What is the identity element for multiplication? What is the multiplicative inverse of 4? of 0.1? What is the familiar name for "multiplicative inverse"?

• algebra 2 -

1.) Depends on what group/ring etc. you consider, for the set of the real umbers it is 1
2.) i(4)= 1/4;; i(0.1)=1 / 0.1 = 10

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