document.write( "Question 602306: Find the domain of the function f(x) = ln(3x + 36). \n" ); document.write( "
Algebra.Com's Answer #380182 by nerdybill(7384) You can put this solution on YOUR website! Find the domain of the function f(x) = ln(3x + 36). \n" ); document.write( ". \n" ); document.write( "Domain defines all possible values x can take... \n" ); document.write( ". \n" ); document.write( "Since, you can't take ln of a negative number, we have: \n" ); document.write( "3x + 36 >= 0 \n" ); document.write( "3x >= -36 \n" ); document.write( "x >= -12 (this is your answer) \n" ); document.write( ". \n" ); document.write( "Or, it could be written as: \n" ); document.write( "[-12, +oo) \n" ); document.write( "where +oo means positive infinity \n" ); document.write( " |