3^x=21

Lösung

3^{x} = 21

x = \frac{ln ( 21 )}{ln ( 3 )}

Dezimale

x = 2.77124 \dots

Schritte zur Lösung

3^{x} = 21

Wende Exponentenregel an

x ln (3) = ln (21)

Löse

x ln (3) = ln (21) : x = \frac{ln ( 21 )}{ln ( 3 )}

x = \frac{ln ( 21 )}{ln ( 3 )}

7^{x + 6} = 7^{3 x - 4}

16 = 2^{x}

1 = 3 (2^{x})

2^{3 x + 4} = 18

4^{x^{2} - 6} - 1 6^{x + 1} = 0