Math Problem Statement
find the limits of f(x) as x approaches 2 from the left in this piecewise function, |x+3|, x>2 and x^2+1, x<2
Solution
To find the limit of as approaches 2 from the left, we need to use the expression defined for in the given piecewise function.
The function is given as:
\begin{cases} |x+3|, & \text{if } x > 2 \\ x^2 + 1, & \text{if } x < 2 \end{cases}$$ Since we are looking for the limit of $$f(x)$$ as $$x \to 2^-$$ (from the left), we use the expression for $$x < 2$$, which is $$f(x) = x^2 + 1$$. Now, let's compute the limit: $$\lim_{x \to 2^-} f(x) = \lim_{x \to 2^-} (x^2 + 1)$$ Substituting $$x = 2$$ into the expression $$x^2 + 1$$: $$\lim_{x \to 2^-} (x^2 + 1) = 2^2 + 1 = 4 + 1 = 5$$ Thus, the limit of $$f(x)$$ as $$x \to 2^-$$ is $$5$$. Would you like details or have any questions about this? Here are five related questions: 1. How do you compute one-sided limits for other types of functions? 2. What happens if the limit from the left and right are not the same? 3. How do absolute value functions behave near critical points like $$x = 2$$? 4. What would be the limit from the right for this particular function? 5. Can a piecewise function be continuous at the boundary between the pieces? **Tip:** When dealing with piecewise functions, always check which part of the function applies to the specific direction of the limit (from the left or right).Ask a new question for Free
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Math Problem Analysis
Mathematical Concepts
Limits
Piecewise Functions
One-Sided Limits
Formulas
Limit as x approaches a value from the left: lim_{x → a^-} f(x)
Theorems
Limit definition for piecewise functions
Suitable Grade Level
Grades 10-12
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