Petaling Jaya · Logarithmic and Exponential Functions

Logarithms Tutoring for PJ IGCSE Add Math Students

Rig, founder of IGCSE Add Math Malaysia

Written by Rig, our founder

8 years teaching IGCSE & SPM maths · Updated 25 August 2026

Logarithms is the 0606 topic that rewards precision, and a Petaling Jaya class racing a compressed timetable often teaches the log laws without the disciplines that actually protect marks. Logs and exponentials turns up in most recent sessions, so the small habits below are worth fixing before they cost a run of marks.

The precision a rushed class leaves out

  • Rejecting invalid roots. A log equation often produces a root that makes an argument negative, and it must be rejected with a reason. Keeping both is a routine lost mark.
  • The hidden quadratic. Substituting y=3xy = 3^x turns an equation like 32x10(3x)+9=03^{2x} - 10(3^x) + 9 = 0 into an ordinary quadratic, a move a fast class rarely drills.
  • Reduce to linear form. Matching gradient and intercept to the right constants, then converting back.

Each is a method habit, built quickly when a specialist checks the working rather than just the answer.

PJ logistics, taught online

These are the precision errors a group class glosses and a specialist catches at once. Online 1-to-1 checks every log solution your child writes, with no SS2 commute eating the study time a racing student needs.

Classes are RM80–90/hr in 1.5-hour sessions with a founder-vetted 0606 specialist. Start with a 1-hour trial class. Message us on WhatsApp with your child’s school and year.

More: Logs & Exponentials notes · worked examples · PJ tutoring guide.

Common questions

My child learned the log laws but still loses marks. What's missing?
Usually the disciplines around the laws, not the laws themselves, and a fast timetable is exactly when those get dropped. The big ones are rejecting a root that makes a log's argument negative, and spotting when an exponential equation is secretly a quadratic. Both are quick to build with feedback on written working, and both are routinely skimmed when a class is racing to finish the syllabus.
Is reduce-to-linear-form worth practising?
Yes, it's a reliable 0606 question and a good-value one to drill. Taking logs to straighten a relationship like y = Ab^x, then reading the constants off the gradient and intercept, rewards a clear method over memorised steps. For a time-pressed PJ student it's high return: one repeatable routine that reappears most sessions.

Keep going

See the teaching work on your own child. Then decide.

Every student starts with a 1-hour trial class taught by the vetted tutor your child would actually have. Real teaching, a diagnostic on real exam questions, and a straight answer on the gap to target. One hour at your tutor's rate (RM80–90/hr), no package and no deposit, and you decide afterwards whether to book a weekly slot. Online anywhere in Malaysia.