Learn to use the rules of logarithms to solve a logarithmic equation

👉 Learn about solving logarithmic equations. Logarithmic equations are equations involving logarithms. To solve a logarithmic equation, we first use our knowledge of logarithm laws/properties to express the terms in both sides of the equality sign as single terms. Then, we equate the numbers/expressions in the logarithms and hence solve for the unknown variable. Note that the logarithms must be of the same base.

If one side of the logarithmic equation have logarithm and the other side does not have logarithm, the equation can be easily evaluated by taking the terms in both sides of the equality sign as exponents of powers with the base of the power corresponding to the base of the term having logarithm. The base of the power cancels out the logarithm and then we can evaluate the unknown variable.

Organized Videos:
✅Solve Logarithmic Equations
✅Solve Natural Logarithmic Equations
✅Solve Logarithmic Equations
✅Solve Logarithmic Equations | Learn About
✅Solve Logarithmic Equations with Multiple Logs
✅Solve Logarithmic Equations with Logs on Both Sides

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[pettermarkussen]

This is wrong. You can not start with the Equation : 2*log(x) +log(4)=2 and then say that x= pluss or minus 5. If x is minus 5, you would have: 2*log(-5) + log(4) =2. You can not take logarithmof an negative number!