1/4 =e^{-x}

Lösung

\frac{1}{4} = e^{- x}

x = 2 ln (2)

Dezimale

x = 1.38629 \dots

Schritte zur Lösung

\frac{1}{4} = e^{- x}

Wende Exponentenregel an

ln (\frac{1}{4}) = - x

Löse

ln (\frac{1}{4}) = - x : x = 2 ln (2)

x = 2 ln (2)

3^{x + 5} = \frac{1}{27}

so l v e f or y, x = e^{y} - 2

(4)^{2 x - 3} = (8)^{- x}

7^{n} \cdot 7^{3} = 7^{12}

2^{a} = 9