P2.5.3 - Solving equations using logarithms
- Syllabus
- 2019
- Objective
- P2.5.3
- Level
- AS
The solution of equations of the Students may use the change of base formula. form ax = b.
Use solving equations using logarithms to connect the rule to the data and decision in the question.
This matters because solving equations using logarithms determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.
Example: apply solving equations using logarithms to one small, clearly defined case, show the key step or comparison, and explain the result in words.
Boundary: use the formula and units given in the question, show the substitution and interpret the result; the calculation alone is not the conclusion.