Question

Solve r
e^r=(1/2)^(t/80)

Answer 1

\[e^r=\left(\frac12\right)^\frac{t}{80}\]

Answer 2

r = (-t/80) ln2

Answer 3

Okay that sort of helps... what is the numerical value of r?

Answer 4

if t be known.. r becomes specified... what is the t?

Answer 5

Well it doesn't give me t so lets just say it's 1

Answer 6

okey then... we know that ln2=0.69314718056
so... r = -1/80 * 0.69314718056
right?

Answer 7

yes

Answer 8

got it right... thanks!