3*10^{-9}=10^{-x}

Lösung

3 \cdot 1 0^{- 9} = 1 0^{- x}

x = - \frac{ln ( \frac{3}{1 0 ^{9}} )}{ln ( 10 )}

Dezimale

x = 8.52287 \dots

Schritte zur Lösung

3 \cdot 1 0^{- 9} = 1 0^{- x}

Wende Exponentenregel an

ln (3 \cdot 1 0^{- 9}) = - x ln (10)

Löse

ln (3 \cdot 1 0^{- 9}) = - x ln (10) : x = - \frac{ln ( \frac{3}{1 0 ^{9}} )}{ln ( 10 )}

x = - \frac{ln ( \frac{3}{1 0 ^{9}} )}{ln ( 10 )}

- e^{x + 4} = - 58

3^{n} = 3 \cdot 9^{3} \cdot 8 1^{2}

e^{a} = a

(x^{2})^{r (x) + 3} = x^{5 r (x) - 6}

so l v e f or x, f = C b^{x}