document.write( "Question 330567: Determine the domain of f in f(x)=10-square root of 3-x \n" ); document.write( "
Algebra.Com's Answer #236954 by nyc_function(2741)![]() ![]() You can put this solution on YOUR website! We have f(x) = 10 - sqrt[3 - x].\r \n" ); document.write( "\n" ); document.write( "Set what lies in the radicand to be greater than or equal to zero and then solve for x.\r \n" ); document.write( "\n" ); document.write( "3 - x ≥ 0\r \n" ); document.write( "\n" ); document.write( "-x ≥ -3\r \n" ); document.write( "\n" ); document.write( "Since we are dividing by a negative number, the inequality sign must by reversed. \r \n" ); document.write( "\n" ); document.write( "x ≤ -3/-1\r \n" ); document.write( "\n" ); document.write( "x ≤ 3\r \n" ); document.write( "\n" ); document.write( "This makes sense because any number bigger than 3 that we replace x with in the radicand will make your square root undefined. \r \n" ); document.write( "\n" ); document.write( "The domain is: ALL REAL NUMBERS EXCEPT THAT X MUST BE LESS THAN OR EQUAL TO 3. \r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |