math Flashcards
1
Q
reciprocal
A
倒数，相互，互惠，交，彼此相反的，倒易，有来有往
adj. given, felt, or done in return.
(of an agreement or obligation) bearing on or binding each of two parties equally.
n. a mathematical expression or function so related to another that their product is one; the quantity obtained by dividing the number one by a given quantity.
