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PhysicsSL

Newton's Laws

Forces and motion.

F = m · a
ChemistryHL

Atomic Structure

Electrons, orbitals & energy.

✓ Worked example
Electron configuration of Fe.
Math AAHL · Paper 1

Introduction to Derivatives

Power rule and first principles.

📘 What you need to know
Derivatives measure instantaneous rate of change.
f(x) = xⁿ ⇒ f'(x) = n·xⁿ⁻¹
✓ Worked example
f(x) = 3x⁴ − 2x² → f'(x) = 12x³ − 4x
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