Why does the expansion of - [(e^x)/12 - 3(e^-x)]^2 contain a (-1/2)? Note: when expanded --> [(e^2x)/144 - 9(e^-2x) -1/2] Shouldn't it just be the first two terms? Thanks in advance!
Follow Math Help Forum on Facebook and Google+
Originally Posted by bhaktir Why does the expansion of - [(e^x)/12 - 3(e^-x)]^2 contain a (-1/2)? Note: when expanded --> [(e^2x)/144 - 9(e^-2x) -1/2] Shouldn't it just be the first two terms? Thanks in advance! Recall that . So in this case . Does this make sense?
hi the formula for the square of a difference is: If and then: try it now.
OH! (a-b)^2 I can't believe I forgot that! Calc III is messing with my head. :/ Thanks again for the swift responses!! This site has been extremely helpful!
View Tag Cloud