Trig question (1 Viewer)

untouchablecuz

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as x->infinity, cos(x/2) fluctuates between 1 and -1

so from my working (i don't think there's anything wrong with it), there is no limit

perhaps the original limit was meant to be as x->0 :confused:
 

jet

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God, that graph hurt my head. I think the limit should probably be x -> 0
 

GUSSSSSSSSSSSSS

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times by (sinx/sinx) and simplify

end up with x/sinx + x/tanx
or summit like that

then apply the limit....watever it is...=S lol
 

Drongoski

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disregard everything i said earlier
I think your earlier solution with no limit is correct. If I'm not mistaken, in yr last version you don't have as denominator: lim (u -> 0) [u/tan u] = 1

Unlikely to get such limit questions in mx1, looking at past 15-yr papers.
 
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