Below are four equations in $x$. Assume that $0 < r < 4$. Which of the following equations has the largest solution for $x$ ?
Below are four equations in $x$. Assume that $0 < r < 4$. Which of the following equations has the largest solution for $x$ ?
- [KVPY 2011]
- A
$5\left(1+\frac{r}{\pi}\right)^x=9$
- B
$5\left(1+\frac{r}{17}\right)^x=9$
- C
$5(1+2 r)^x=9$
- D
$5\left(1+\frac{1}{r}\right)^x=9$
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