Calculating Limit of Function – A quotient of functions with cos – Exercise 268

Exercise

Evaluate the following limit:

limx0cos(2x)1cosx1\lim _ { x \rightarrow 0 } \frac {\cos ( 2 x ) - 1} {\cos x - 1}

Final Answer


limx0cos(2x)1cosx1=4\lim _ { x \rightarrow 0 } \frac {\cos ( 2 x ) - 1} {\cos x - 1} = 4

Solution

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