4. Let x and y be positive real numbers. Write down the following as a single logarithm:
5. Solve the equation for x
x = -3 could not be a solution because it will result in a negative argument to the log function. Therefore, the solution is x = 4
Mathcad solution
Solution of Old Exams Problems

Chapter 4
1. Sketch the graph of Write down the range of g and all the asymptotes (if any)
2. Find the values of

Mathcad Solution:
3. Let f(x) be a logarithmic function such that f(2) = 3. Find the value of f(4).