Limit ... everybody ... Limit. Find it ??? :P
lim x-pi/4 (tan x- sin 2x)/(tanx-1)
thank you :)

Question

Limit ... everybody ... Limit. Find it ??? :P
lim x->pi/4    (tan x- sin 2x)/(tanx-1)
thank you :)

kainui · Answer

Are you allowed to use L'Hopital's rule?

anonymous · Answer

No sadly :(

kainui · Answer

Good thing I asked. Well good luck.

anonymous · Answer

ok thank you so much :D have a good day sir :)

kainui · Answer

I'd try multiplying it by (tan+1)/(tan+1) , not sure if that'll help, but that's what I'd try.

anonymous · Answer

o_O wow

kainui · Answer

Haha, Maybe note that sin(2x) is equal to 2sinxcosx. Yeah, maybe it's not very helpful, but I mean, who else is helping here? I have no paper around to say, so I'm pretty disabled right now with respect to this kind of stuff. But usually you can try a bunch of stuff and eventually some kind of clever manipulation works, you know?

anonymous · Answer

:D yeah :)) hew hew

anonymous · Answer

OMG looked back to it, i have no idea what to do :))

kainui · Answer

I say you do L'H and see what the answer is supposed to be, sometimes just knowing where you're going is marginally helpful enough to be worth something. I grabbed some paper, I'm pushing trig functions around as we type.

anonymous · Answer

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