State that if they are True or False. Let f:R+ R be the function delflined by ftx)

State that if they are True or False.
 

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Let f:R+ R be the function delflined by ftx) = x² - 1 thenf(-1,3) = [-2, 2) 21 The congruance equivalence relation modulo 5 is defined on the set of integers 7 byx=vlmod 5) if and only if 5 divides (x-v) Then the equivalens 4 (4+5k kE Z) 3. Eot y (1, + x) →R be defined by f(x) = then f is one-to-one and onto x -1 4:00 Lef f: (0, +0)[1. +) be detined by f(x) = x + 1 then f is one-to-one and onto. Let f:R+ R be the function delflined by ftx) = x² - 1 thenf(-1,3) = [-2, 2) 21 The congruance equivalence relation modulo 5 is defined on the set of integers 7 byx=vlmod 5) if and only if 5 divides (x-v) Then the equivalens 4 (4+5k kE Z) 3. Eot y (1, + x) →R be defined by f(x) = then f is one-to-one and onto x -1 4:00 Lef f: (0, +0)[1. +) be detined by f(x) = x + 1 then f is one-to-one and onto.