Q. Solve for a positive value of x.log8(512)=xAnswer:
Recognize Equation Form: Recognize the form of the equation.The equation is in the form of a logarithm with base 8 and the argument is 512. We need to find the exponent x such that 8 raised to the power of x equals 512.
Convert to Exponential: Convert the logarithmic equation to an exponential equation.Using the definition of a logarithm, we can rewrite the equation log8512=x as 8x=512.
Find Common Base: Find a common base for 8 and 512. Both 8 and 512 are powers of 2. 8 is 23 and 512 is 29. So we can rewrite the equation as (23)x=29.
Simplify Left Side: Simplify the left side of the equation using the power of a power property.Using the power of a power property (ab)c=ab∗c, we get 23x=29.
Set Exponents Equal: Since the bases are equal, the exponents must be equal. We can now set the exponents equal to each other: 3x=9.
Solve for x: Solve for x.Divide both sides of the equation by 3 to isolate x: x=39.
Calculate x Value: Calculate the value of x.x=39=3.