Question 1163503
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can you help me please
<pre>
given f(x) = {x^2 -3 for x > 4
             {log(x-3) for x <= 4, 

evaluate f(4)
</pre>~~~~~~~~~~~~~~~



Hello, it is easy.


<pre>
    The value of 4  belongs to the set  {x <= 4}  and does not belong to the set {x > 4}.


    Right ?  Do you understand it ?


    But of course ! --- It is OBVIOIUS (!)


    Therefore, you should use the FIRST line of the two that define the function.


    So, substitute x= 4 into the formula in the first line of the definition.


    You will get then  f(x) = log(4-3) = log(1) = 0.      <U>ANSWER</U>
</pre>


That is all.