Solve for x: e^(2x)+2e^x+15=0 Thanks
Follow Math Help Forum on Facebook and Google+
Originally Posted by Linnus Solve for x: e^(2x)+2e^x+15=0 Thanks it is quadratic in though you don't have to, let , then you have now solve for . when you are done, you can solve for
So I got 2 imaginary numbers for y... e^x= a imaginary number... How do you ln an imaginary number?
Originally Posted by Linnus So I got 2 imaginary numbers for y... e^x= a imaginary number... How do you ln an imaginary number? if you are not doing complex analysis, then just say there is no solution and move on. otherwise where and that gives the principal logarithm, which is usually what they want
View Tag Cloud