document.write( "Question 74190: solve equation for x=log11 1331 \n" ); document.write( "
Algebra.Com's Answer #53262 by bucky(2189) ![]() You can put this solution on YOUR website! I think what you are expressing is x equals the log to the base 11 of 1331. \n" ); document.write( ". \n" ); document.write( "This can be rewritten in exponential form as: \n" ); document.write( ". \n" ); document.write( " \n" ); document.write( ". \n" ); document.write( "Now you can take the log to the base 10 of both sides to get: \n" ); document.write( ". \n" ); document.write( " \n" ); document.write( ". \n" ); document.write( "By the rules of logs the exponent x comes out as the multiplier of log 11 to give \n" ); document.write( ". \n" ); document.write( " \n" ); document.write( ". \n" ); document.write( "Now you can use your calculator in log to the base 10 mode to get that log 11 = 1.041392685. \n" ); document.write( "Similarly you can use your calculator in log to the base 10 mode to find that log 1331 = \n" ); document.write( "3.124178055. \n" ); document.write( ". \n" ); document.write( "Substitute these two values into our equation to get: \n" ); document.write( ". \n" ); document.write( " \n" ); document.write( ". \n" ); document.write( "Now solve for x by dividing both sides by 1.041392685 to get: \n" ); document.write( ". \n" ); document.write( " \n" ); document.write( ". \n" ); document.write( "So the answer to this problem is x = 3. \n" ); document.write( ". \n" ); document.write( "Because the values are relatively small, when you got to the exponential form of: \n" ); document.write( ". \n" ); document.write( " \n" ); document.write( ". \n" ); document.write( "You could have just plugged values in for x until you got to \n" ); document.write( "is just a \"test taking\" trick. The rigorous way to do it is using the procedures above. \n" ); document.write( ". \n" ); document.write( "Hope this helps you to see your way through this problem. It has some good practice \n" ); document.write( "with working with logs. \n" ); document.write( " \n" ); document.write( " |