SOLUTION: How to solve this limit? {{{lim(x->0, (cos(2x) - cos(x))/(0))}}} Please explain Thank you

Question 1020705: How to solve this limit?

Please explain
Thank you
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
I'm assuming the original limit is

If so, then here are the steps

Step Number	Expression
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.

------------------------------------------------
Notes:

In step 2, I used the trig identity (see page 2 under "Double Angle Formulas")

In step 6, I broke up the limit using the limit law

In step 7, I used the special trig limit (scroll down to bottom half of the page)

From step 8 and beyond, I used the substitution rule and then evaluated/simplified to get the final answer of 0
------------------------------------------------

So in the end,

Final Answer: 0
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