Logarithmic equation
Solve for x: 3x=15
From your title, I will assume you meant
3^x = 15
take logs of both sides and use the rules of logs
log (3^x) = log 15
x log3 = log 15
x = log15/log3
= .... (use your calculator)
To solve for x in the logarithmic equation 3x = 15, you need to isolate x on one side of the equation.
First, divide both sides of the equation by 3 to get:
x = 15/3
Simplifying further:
x = 5
Therefore, the solution for x in the equation 3x = 15 is x = 5.