You can also check your answer by substituting the value of x in the initial equation and determine whether the left side equals the right side. In the case of this problem, then Step 6: If you would like to review another example, click on Example. If no base is indicated, it means the base of the logarithm is Divide both sides of the above equation by 3: Let both sides be exponents of the base e.

Factor the left side of the above equation: You could graph the function Ln x -8 and see where it crosses the x-axis.

The equation can now be written Step 4: By the properties of logarithms, we know that Step 3: Convert the logarithmic equation to an exponential equation: If, after the substitution, the left side of the equation has the same value as the right side of the equation, you have worked the problem correctly.

Simplify the above equation: If the product of two factors equals zero, at least one of the factor has to be zero. If you choose graphing, the x-intercept should be the same as the answer you derived.

By now you should know that when the base of the exponent and the base of the logarithm are the same, the left side can be written x.

Solve for x in the equation. Why is 9 the only solution? We defined our domain to be all the real numbers greater than 3. You can check your answer by graphing the function and determining whether the x-intercept is also equal to 9.

The equation can now be written Step 3: If all three terms are valid, then the equation is valid. The equation Step 3:Anti-logarithm calculator In order to calculate log -1 (y) on the calculator, enter the base b (10 is the default value, enter e for e constant), enter the logarithm value y and press the = or calculate button.

log 2 4 is a logarithm equation that you can solve and get an answer of 2 Problem 3 Rewrite log 2 40− log 2 5 as a single term using the quotient rule formula.

High School Math Solutions – Logarithmic Equation Calculator. Logarithmic equations are equations involving logarithms. In this segment we will cover equations with logarithms Read More. High School Math Solutions – Exponential Equation Calculator.

logarithmic form of the equation, “log b ase 5”. Notice that t he base 5 change s sides, in exponential form the 5 is on the left side of the equal sign, but in logarithmic form the 5.

Evaluate 7 log Set the problem equal to x. Rewrite the problem in exponential form by moving the base of the logarithm to the other side. Calculator Use. This calculator will solve the basic log equation log b x = y for any one of the variables as long as you enter the other two.

The logarithmic equation is solved using the logarithmic function.

DownloadRewrite as a logarithmic equation calculator

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