# Math Help - urgent help please!!

how can i re-write the equation:

t = -100 ln(9.8 - 0.01v)

to make v the subject?

i think it has something to do with e^t or something like that
but i really need help

thanks

2. Originally Posted by cawcutt92
how can i re-write the equation:

t = -100 ln(9.8 - 0.01v)

to make v the subject?

i think it has something to do with e^t or something like that
but i really need help

thanks
$t = -100 \ln(9.8 - 0.01v)$

$\frac{t}{-100} = \ln(9.8 - 0.01v)$

then EXP both sides XD

$exp(\frac{t}{-100} ) = exp(\ln(9.8 - 0.01v))$

$exp(\frac{-t}{100} ) = 9.8 - 0.01v$

$9.8 - exp(\frac{-t}{100} ) = 0.01v$

3. thanks alot