APFIVE Definite Integral of a Power Function
Which of the following correctly evaluates $$\int_{1}^{4}\frac{1}{\sqrt{x}}\,dx$$?
A
$$\frac{1}{2}*(\sqrt{4}-\sqrt{1})=0.5*(2-1)=0.5$$
B
$$\sqrt{4}-\sqrt{1}=2-1=1$$
C
$$2*(\sqrt{4}-\sqrt{1})=2*(2-1)=2$$
D
$$\sqrt{4+1}-\sqrt{1+1}=\sqrt{5}-\sqrt{2}$$
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