Math Problem Statement
Evaluate limx→0 xcotx.
Solution
To evaluate the limit of as , we proceed as follows:
We know that:
Thus, the expression becomes:
Now, we evaluate the limit:
We can split this into two parts:
From the standard limit, we know: and
Therefore:
So, the value of the limit is:
Would you like more details or have any questions?
Related questions:
- How do you evaluate limits involving trigonometric functions in general?
- What is L'Hopital's Rule, and can it be used for this limit?
- How do small-angle approximations help in limit evaluations?
- What is the limit , and why is it important?
- How does the continuity of cosine and sine functions affect their limits?
Tip: Remember that is a crucial result for evaluating many trigonometric limits.
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Math Problem Analysis
Mathematical Concepts
Limits
Trigonometry
Formulas
cot(x) = cos(x)/sin(x)
lim x → 0 (sin(x)/x) = 1
Theorems
Standard trigonometric limits
Continuity of trigonometric functions
Suitable Grade Level
Grades 10-12