how can u solve this equation (3^x)-(3^-x)=4...hehe:P
please i really need it fast..TT
"please i really need it fast."
That's not how it works - you need to show some of your first tries, or explain what you've done that hasn't worked. At that time you may receive hints.
Hmm.. to get you started, multiply everything by 3^(x).. from there everything is bright and clear.
then take a substitution of the form [tex] t=3^x[/tex] so u'll get a quadratic eq.
once you get you solve the quadratic, don't forget to substitute 3x=t back again
Guys we've helped enough now let the OP do the math.
damn!!you people are damn good!:P i tried many times but nothing happens..THX GUYS:)
Separate names with a comma.