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g(x)=(tan(x))/(1-cos(x))
We want to find 
lim_(x rarr pi)g(x).
What happens when we use direct substitution?
Choose 1 answer:
(A) The limit exists, and we found it!
(B) The limit doesn't exist (probably an asymptote).
(C) The result is indeterminate.

g(x)=tan(x)1cos(x) g(x)=\frac{\tan (x)}{1-\cos (x)} \newlineWe want to find limxπg(x) \lim _{x \rightarrow \pi} g(x) .\newlineWhat happens when we use direct substitution?\newlineChoose 11 answer:\newline(A) The limit exists, and we found it!\newline(B) The limit doesn't exist (probably an asymptote).\newline(C) The result is indeterminate.

Full solution

Q. g(x)=tan(x)1cos(x) g(x)=\frac{\tan (x)}{1-\cos (x)} \newlineWe want to find limxπg(x) \lim _{x \rightarrow \pi} g(x) .\newlineWhat happens when we use direct substitution?\newlineChoose 11 answer:\newline(A) The limit exists, and we found it!\newline(B) The limit doesn't exist (probably an asymptote).\newline(C) The result is indeterminate.
  1. Direct Substitution: Let's first try direct substitution of x=πx = \pi into the function g(x)=tan(x)1cos(x)g(x) = \frac{\tan(x)}{1 - \cos(x)}.g(π)=tan(π)1cos(π)g(\pi) = \frac{\tan(\pi)}{1 - \cos(\pi)}
  2. Calculate Values: Calculate tan(π)\tan(\pi) and cos(π)\cos(\pi).\newlinetan(π)=0\tan(\pi) = 0 (since the tangent of π\pi is 00)\newlinecos(π)=1\cos(\pi) = -1 (since the cosine of π\pi is 1-1)
  3. Substitute Values: Substitute these values into the function.\newlineg(π)=01(1)g(\pi) = \frac{0}{1 - (-1)}\newlineg(π)=01+1g(\pi) = \frac{0}{1 + 1}\newlineg(π)=02g(\pi) = \frac{0}{2}\newlineg(π)=0g(\pi) = 0
  4. Calculate Limit: Since we get a defined value 00 when we substitute x=πx = \pi, the limit exists and we have found it.

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