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Let

h(x)={[e^(2x)," for "x < 0],[e^(5x)," for "x >= 0]:}
Is 
h continuous at 
x=0 ?
Choose 1 answer:
(A) Yes
(B) No

Let\newlineh(x)={e2xamp; for xlt;0e5xamp; for x0 h(x)=\left\{\begin{array}{ll} e^{2 x} &amp; \text { for } x&lt;0 \\ e^{5 x} &amp; \text { for } x \geq 0 \end{array}\right. \newlineIs h h continuous at x=0 x=0 ?\newlineChoose 11 answer:\newline(A) Yes\newline(B) No

Full solution

Q. Let\newlineh(x)={e2x for x<0e5x for x0 h(x)=\left\{\begin{array}{ll} e^{2 x} & \text { for } x<0 \\ e^{5 x} & \text { for } x \geq 0 \end{array}\right. \newlineIs h h continuous at x=0 x=0 ?\newlineChoose 11 answer:\newline(A) Yes\newline(B) No
  1. Check Left-hand Limit: To determine if h(x)h(x) is continuous at x=0x=0, we need to check if the left-hand limit as xx approaches 00 from the left (x < 0) is equal to the right-hand limit as xx approaches 00 from the right (x0x \geq 0), and both of these limits must be equal to the value of the function at x=0x=0.
  2. Calculate Left-hand Limit: First, let's find the left-hand limit of h(x)h(x) as xx approaches 00 from the left. Since for x < 0, h(x)=e2xh(x) = e^{2x}, we need to calculate the limit of e2xe^{2x} as xx approaches 00 from the left.\newlinelimx0h(x)=limx0e2x=e20=e0=1.\lim_{x \to 0^-} h(x) = \lim_{x \to 0^-} e^{2x} = e^{2\cdot0} = e^0 = 1.
  3. Calculate Right-hand Limit: Next, we need to find the right-hand limit of h(x)h(x) as xx approaches 00 from the right. For x0x \geq 0, h(x)=e5xh(x) = e^{5x}, so we calculate the limit of e5xe^{5x} as xx approaches 00 from the right.\newlinelimx0+h(x)=limx0+e5x=e50=e0=1.\lim_{x \to 0+} h(x) = \lim_{x \to 0+} e^{5x} = e^{5\cdot0} = e^0 = 1.
  4. Check Value at x=0x=0: Now, we need to check the value of the function at x=0x=0. Since x=0x=0 is included in the interval for x0x \geq 0, we use the definition of h(x)h(x) for x0x \geq 0, which is h(x)=e5xh(x) = e^{5x}.\newlineh(0)=e50=e0=1h(0) = e^{5\cdot 0} = e^0 = 1.
  5. Conclusion: Since the left-hand limit as xx approaches 00, the right-hand limit as xx approaches 00, and the value of the function at x=0x=0 are all equal to 11, we can conclude that h(x)h(x) is continuous at x=0x=0.

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