Which of the following is true?

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(C) We evaluate each integral one by one:$(a)$ $\int_{0}^{1} e^{x} dx = [e^{x}]_{0}^{1} = e^{1} - e^{0} = e - 1$. This is false.$(b)$ $\int_{0}^{1} 2^

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$\int_{0}^{1} \sqrt{x} dx = \frac{2}{3}$

Vedclass · Answer

(C) We evaluate each integral one by one:$(a)$ $\int_{0}^{1} e^{x} dx = [e^{x}]_{0}^{1} = e^{1} - e^{0} = e - 1$. This is false.$(b)$ $\int_{0}^{1} 2^{x} dx = [\frac{2^{x}}{\log_{e} 2}]_{0}^{1} = \frac{1}{\log 2} \cdot (2^{1} - 2^{0}) = \frac{1}{\log 2}$. This is false.$(c)$ $\int_{0}^{1} \sqrt{x} dx = \int_{0}^{1} x^{1/2} dx = [\frac{x^{3/2}}{3/2}]_{0}^{1} = \frac{2}{3} [1^{3/2} - 0^{3/2}] = \frac{2}{3}$. This is true.$(d)$ $\int_{0}^{1} x dx = [\frac{x^{2}}{2}]_{0}^{1} = \frac{1}{2} - 0 = \frac{1}{2}$. This is false.

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