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Logarithmic Function

Value of t for a germ population to double its original value

Problem
A germ population has a growth curve $Ae^{0.4t}$. At what value of $t$ does its original value doubled?

A.   t = 7.13 C.   t = 1.73
B.   t = 1.37 D.   t = 3.71

 

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Evaluate the integral of (x dx) / (x^2 + 2) with lower limit of 0 and upper limit of 1

Problem
Evaluate $\displaystyle \int_0^1 \dfrac{x \, dx}{x^2 + 2}$.

A.   0.2027 C.   0.2270
B.   0.2207 D.   0.2072

 

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