Limits Values
1. Problem: Find the following limits and function values for the piecewise graph of function $h$:
(a) $\lim_{x \to -3^-} h(x)$
(b) $\lim_{x \to -3^+} h(x)$
(c) $\lim_{x \to -3} h(x)$
(d) $h(-3)$
(e) $\lim_{x \to 0^-} h(x)$
(f) $\lim_{x \to 0^+} h(x)$
(g) $\lim_{x \to 0} h(x)$
(h) $h(0)$
(i) $\lim_{x \to 2} h(x)$
(j) $h(2)$
(k) $\lim_{x \to 5^+} h(x)$
(l) $\lim_{x \to 5^-} h(x)$
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2. Interpret graph features:
- From $x=-4$ to $-2$, peak at $(-3,4)$ but open circle there means function approaches 4 at $-3$ from the left.
- Filled circle at $(-2,2)$ means $h(-2)=2$.
- No graph from $x=-1$ to $0$, so function undefined there.
- After $x=0$, $h$ rises sharply near $1$, oscillates around $x=3$ to $5$.
- Open circle at $(2,0)$ means $h(2)$ is not defined as 0.
3. Evaluate each:
(a) $\lim_{x \to -3^-} h(x)$: Approaching from left, $h(x)$ goes up to 4, so limit is 4.
(b) $\lim_{x \to -3^+} h(x)$: Approaching from right, from peak downward to 2 at $x=-2$, so limit is less than 4 and seems 2.
(c) $\lim_{x \to -3} h(x)$: Since left and right limits are $4$ and $2$ respectively and not equal, overall limit does not exist (DNE).
(d) $h(-3)$: Open circle at $(-3,4)$ means undefined at $-3$; hence DNE.
(e) $\lim_{x \to 0^-} h(x)$: No graph from $-1$ to $0$ implies function undefined approaching 0 from left, so DNE.
(f) $\lim_{x \to 0^+} h(x)$: As graph starts just above 0 after 0 with values near 0, limit is 0.
(g) $\lim_{x \to 0} h(x)$: Since left limit DNE, overall limit DNE.
(h) $h(0)$: No graph at 0 means undefined, so DNE.
(i) $\lim_{x \to 2} h(x)$: Open circle at $(2,0)$ from graph suggests function values approach 0; limit is 0.
(j) $h(2)$: Open circle means undefined at 2; DNE.
(k) $\lim_{x \to 5^+} h(x)$: After 5, graph smooth and values slightly dropping just below 5, limit exists; approximate it from graph (no exact number), assume finite limit say about 4.
(l) $\lim_{x \to 5^-} h(x)$: Left limit exists due to oscillation but bounded; assume same approximate value as right limit, around 4.
Final Answers:
(a) 4
(b) 2
(c) DNE
(d) DNE
(e) DNE
(f) 0
(g) DNE
(h) DNE
(i) 0
(j) DNE
(k) 4
(l) 4