How to find f ( - 1 ) given f ( x ) = 2 x + 2 ?

Question

How to find                f                (         -         1         )                 given                f                (         x         )                 =     2     x     +     2    ?

izuzmem5nxc · Accepted Answer

9    &amp;#xD7;          81      x        =    1          /              27      x        &amp;#x2212;    3             3      2        &amp;#x00D7;          3              4        x              =    (    1          /        3          )      3        (    x    &amp;#x2212;    3    )             3      2        +    4    x    =          3      &amp;#x2212;        [    3    (    x    &amp;#x2212;    3    )    ]   Bases are equal. Exponents must be equal.      2    +    4    x    =    &amp;#x2212;    (    3    x    &amp;#x2212;    9    )   2+4x = -3x+9 4x+3x = 9-2 7x = 7 x = 7/7 x = 1 Thus, the value of x is 1

How to find f ( - 1 ) given f ( x ) = 2...

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