Let a and b be sets. let f : a ? b. recall that f^1 : p(a) ? p(b) is defined by f^1(s) = {f(x)| x ? s}.
(a) prove that if f is an injection, then f^1 is an injection.
(b) prove that if f^1 is an injection, then f is an injection.
(f^1) is just symbol. i can not type actual symbol, so i just change that.
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( f ) orignal symbol is like that. arrow is above f

Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. release your mouse button when the item is place. if you change your mind, drag the item to the trashcan. click the trashcan to clear all your answers. solve this quadratic equation using the quadratic formula. 2x2 - 2x=1 need asap

Will give brainliest immeadeately true or false: the origin woud be included in the solution set for the inequality: y< 2x-5

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