This equation is continous everywhere, so all you have to do to evaluate the limit is substitute, plug in Pi/6 for x
sin(pi/6) = 1/2
e^(1/2) = 1.64872127
2007-08-31 10:57:25
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answer #1
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answered by bluemanshoe 2
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Since pi(radians)=180 (degrees) pi(radians)/6=30 (degrees).
This defines the classical 30-60-90 degree unit triangle with sides of 1 (hypotenuse - radius on the unit circle), sqrt(3)/2 (length - cos) and 1/2 (height - sin).
Since both sinx and e^x are everywhere continuous,
lim xâpi/6 e^(sinx) = e^[lim xâpi/6 (sinx)]
Thus, from both directions,
lim xâpi/6 e^(sinx) = e^(1/2)
2007-08-31 18:16:46
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answer #2
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answered by richarduie 6
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This is just a substitution technique! just substitute pi/6 to x in e^(sinx)
thus, Lim x-> pi/6 e^(sinx) = e^1/2.
This is actually by a theorem of continuity that states that if f is continuous, lim f(g(x)) = f(lim g(x)). i.e. the continuous function and the limit operator are interchangeable.
Thus, rigorously applying the theorem, since the exponential and trigonometric function are continuous at pi/6 (actually, everywhere), then
lim x->pi/6 exp(sin(x)) = exp(lim x->pi/6 (sin x))
= exp ( sin (lim x->pi/6 x)) = exp(sin pi/6) = exp (1/2).
2007-08-31 17:58:42
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answer #3
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answered by johnvee 3
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Lim xâpi/6 e^(sinx)?
sin (pi/6) = .5
e^.5 = 1.6487
Lim x--> pi/6 (e^sinx) = e^.5 = approx = 1.6487
2007-08-31 18:18:29
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answer #4
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answered by ironduke8159 7
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omg thats so easy, Lim xâpi/6 e^(sinx)=52
2007-08-31 17:55:23
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answer #5
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answered by Anonymous
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