please please please (1 Viewer)

[crazyymonkey]

help with this question.


differentiate:
(i)
((e^-x)-e^x)^2

please help

 

[seano77]

=2((e^-x)-e^x).((-e^x)-e^x)) (I think).

 

[Aerath]

=2((e^-x)-e^x).((-e^x)-e^x)) (I think).

Yeah, it's right.
But if you wanna be a pedant, you can have:
y' = -2(e^-x-e^x)(e^-x+e^x)

 

[crazyymonkey]

just letting everyone know i got the answer to this question

and it becomes

2((-e^-2x)-(e^2x))

=]

thankyou anyways everyone. i got 1 mark for the first step being right.
but for that extra mark i needed to multiple the two brackets together. =]