57=15^x

Lösung

57 = 1 5^{x}

x = \frac{ln ( 57 )}{ln ( 15 )}

Dezimale

x = 1.49297 \dots

Schritte zur Lösung

57 = 1 5^{x}

Wende Exponentenregel an

ln (57) = x ln (15)

Löse

ln (57) = x ln (15) : x = \frac{ln ( 57 )}{ln ( 15 )}

x = \frac{ln ( 57 )}{ln ( 15 )}

so l v e f or x, x y - e^{x} + e^{y} = 0

5^{x + 3} = 7^{4 - 3 x}

2 7^{x - 1} = 9

12 = 21 e^{20 x}

3^{2 x + 1} = 5 (3^{x}) + 2