Why is my derivation of half life (t½) not correct? Watch

Dggj_19
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I tried to derive the given equation for half-life via the equation for radioactive decay, and I can't see why it doesn't seem to work. Any help is appreciated!

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BobbJo
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it is the same thing

ln(1/2) = ln 1 - ln 2 = -ln 2

 \dfrac{ln(1/2)}{- \lambda} = \dfrac{-ln2 }{ - \lambda} = \dfrac{ln 2 }{ \lambda}
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Dggj_19
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(Original post by BobbJo)
it is the same thing

ln(1/2) = ln 1 - ln 2 = -ln 2

 \dfrac{ln(1/2)}{- \lambda} = \dfrac{-ln2 }{ - \lambda} = \dfrac{ln 2 }{ \lambda}
Welp, that explains it. thank you!
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