e^{-x}=0.2

Lösung

e^{- x} = 0.2

x = - ln (0.2)

Dezimale

x = 1.60943 \dots

Schritte zur Lösung

e^{- x} = 0.2

Wende Exponentenregel an

- x = ln (0.2)

Löse

- x = ln (0.2) : x = - ln (0.2)

x = - ln (0.2)

9^{x} + 2 \cdot 3^{x + 1} - 1 = 0

2^{x + 1} = 6

\frac{1}{128} = 2^{5 x + 3}

2 7^{x} (9^{2 x - 1}) = 3^{x + 4}

2^{8 x + 3} = 2