Thread: simple simplification

Im just confused as to how this step (1) [ -ln l 150 - y l = (t / 200) - ln 130 ], simplified into this (2) l 150 - y l = 130e^(-t/200)

The only part i dont understand about this is how (t/200) in (1) became (-t/200) in (2)



Thanks

Originally Posted by johntuan

Im just confused as to how this step (1) [ -ln l 150 - y l = (t / 200) - ln 130 ], simplified into this (2) l 150 - y l = 130e^(-t/200)

The only part i dont understand about this is how (t/200) in (1) became (-t/200) in (2)



Thanks

Note that

So

Does this make sense?